Usage of the character 底

background
bottom
base
end (of the month, year etc)
remnants
(math.) radix
base

底

[底]

(equivalent to 的 as possessive particle)

jiēdǐ

揭底

[揭底]

to reveal the inside story
to expose sb's secrets

yángdǐ

洋底

[洋底]

ocean floor
bottom of the ocean

wòdǐ

卧底

[臥底]

to hide (as an undercover agent)
an insider (in a gang of thieves)
a mole

běndǐ

本底

[本底]

background

dàodǐ

到底

[到底]

finally
in the end
when all is said and done
after all
to the end
to the last

dǐxì

底细

[底細]

inside information
the ins and outs of the matter
how things stand
what's up

dǐdìng

底定

[底定]

(literary) to quell an insurgency
(Tw) to settle (a matter)

pándǐ

盘底

[盤底]

to interrogate and get to the bottom of sth

dǐbǎn

底版

[底版]

(photography) negative
photographic plate
(printing) plate
block

tiāndǐ

天底

[天底]

(astronomy) nadir

jiāodǐ

交底

[交底]

to fill sb in (on the details of sth)
to put all one's cards on the table

fěndǐ

粉底

[粉底]

foundation (cosmetics)

dǐliào

底料

[底料]

base ingredient
base (cooking)
primer (paint)

dǐzi

底子

[底子]

base
foundation
bottom

yuèdǐ

月底

[月底]

end of the month

chèdǐ

彻底

[徹底]

thorough
thoroughly
complete

dìdǐ

地底

[地底]

subterranean
underground

pùdǐ

铺底

[鋪底]

shop fittings

guōdǐ

锅底

[鍋底]

the bottom of a pot or pan
hotpot broth

dǐbiān

底边

[底邊]

base (of a triangle)
base line
hem line (of skirt)

lòudǐ

露底

[露底]

to let out a secret

dǐpán

底盘

[底盤]

chassis

gǔdǐ

谷底

[谷底]

valley floor
(fig.) lowest ebb
all-time low

xīndǐ

心底

[心底]

bottom of one's heart

xièdǐ

泄底

[洩底]

to divulge the inside story

dǐpái

底牌

[底牌]

cards in one's hand
(fig.) undisclosed strength or information
hidden trump

dǐyùn

底蕴

[底蘊]

inside information
concrete details

bǎodǐ

保底

[保底]

to break even
to guarantee a minimum (salary etc)

chèdǐ

澈底

[澈底]

variant of 徹底／彻底 (chèdǐ)

tǎodǐ

讨底

[討底]

to enquire
to demand details

mídǐ

谜底

[謎底]

answer to a riddle

lúdǐ

颅底

[顱底]

base of the skull

píngdǐ

平底

[平底]

flat bottomed
low heeled

dǐzhī

底汁

[底汁]

stock (cooking)
base (of sauce or gravy)

méidǐ

没底

[沒底]

unsure
uncertain
unending

dǐzuò

底座

[底座]

base
pedestal
foundation

dǐqī

底漆

[底漆]

primer

dǐzhǐ

底止

[底止]

(literary) end
limit

dǐfá

底阀

[底閥]

bottom valve
foot valve

mōdǐ

摸底

[摸底]

to have a clear view (of a situation)
to fish for information
fact-finding

bāndǐ

班底

[班底]

ordinary members of theatrical troupe

biāodǐ

标底

[標底]

base number (of a tender)
starting price (for auction)

dǐduān

底端

[底端]

bottom
bottom side
end part

gēndǐ

根底

[根底]

foundation
grounding
background
what lies at the bottom of sth
root
cause

tòudǐ

透底

[透底]

to disclose inside information
to divulge secret details

tándǐ

潭底

[潭底]

bottom of a (deep) pond

dǐshù

底数

[底數]

radix
base (math.)

gōngdǐ

功底

[功底]

training in the basic skills
knowledge of the fundamentals

Lóudǐ

娄底

[婁底]

Loudi prefecture-level city in Hunan

jiādǐ

家底

[家底]

family property
patrimony

jīdǐ

基底

[基底]

plinth; base; substrate

dǐmiàn

底面

[底面]

bottom
bottom side
bottom surface

yǎndǐ

眼底

[眼底]

fundus of the eye (containing the choroid, retina, optic nerve etc)
inside the eye
right in front of one's eyes
in full view as a panorama

tàndǐ

探底

[探底]

(of stock prices, etc) to slump; to dip

dǐxiàn

底限

[底限]

lowest limit
bottom line

hǎidǐ

海底

[海底]

seabed
seafloor
bottom of the ocean

dǐqì

底气

[底氣]

lung capacity; lung power
boldness; confidence; self-assurance; vigor

dǐcéng

底层

[底層]

ground floor; first floor
lowest level; lowest rung (of society etc)

àndǐ

案底

[案底]

criminal record

xiédǐ

鞋底

[鞋底]

sole (of a shoe)

niándǐ

年底

[年底]

the end of the year
year-end

dǐxia

底下

[底下]

the location below sth
afterwards

dǐxīn

底薪

[底薪]

basic salary
base pay
salary floor

fēngdǐ

封底

[封底]

the back cover of a book

shuǐdǐ

水底

[水底]

the bottom of a body of water

jiǎodǐ

脚底

[腳底]

soles of the feet

dǐpiàn

底片

[底片]

negative
photographic plate

dǐjiè

底界

[底界]

lower boundary

dǎdǐ

打底

[打底]

to lay a foundation (also fig.)
to make a first sketch
to eat sth before drinking
to apply an undercoat

diàndǐ

垫底

[墊底]

to put sth on the bottom
to eat sth to tide oneself over until mealtime
to lay the foundation
to come last in the rankings

liúdǐ

留底

[留底]

to keep a copy
copy kept for archiving
to put aside a portion (of a money sum)

yèdǐ

页底

[頁底]

the bottom of the page

dōudǐ

兜底

[兜底]

to provide a safety net
(coll.) to reveal; to expose (sth disreputable)

wúdǐ

无底

[無底]

bottomless

dǐféi

底肥

[底肥]

base fertilizer

chāodǐ

抄底

[抄底]

(finance) to snap up undervalued stocks
bargain-hunting; bottom-fishing

dǐbù

底部

[底部]

bottom

dǐxiàn

底线

[底線]

bottom line; the limit of what one is prepared to accept
(sports) baseline
(sewing) under thread
spy; informer; plant

dǎdǐzi

打底子

[打底子]

to sketch
to draft
to lay the foundation

Dǐbǐsī

底比斯

[底比斯]

Thebes, place name in ancient Egypt
Thebes, ancient Greek city state

dǐkuākè

底夸克

[底夸克]

bottom quark (particle physics)

Mòdǐgǎi

末底改

[末底改]

Mordechai (name)

Lóudǐshì

娄底市

[婁底市]

Loudi prefecture-level city in Hunan

Bāshìdǐ

巴士底

[巴士底]

the Bastille (Paris)

dǎdǐkù

打底裤

[打底褲]

leggings

yìngdǐzi

硬底子

[硬底子]

(esp. of an actor) strong
capable

bǐdǐxià

笔底下

[筆底下]

ability to write

Chuándǐzuò

船底座

[船底座]

Carina (constellation)

wúdǐkēng

无底坑

[無底坑]

the bottomless pit (Hell in the Bible)
pitless (elevator)

yóudǐké

油底壳

[油底殼]

oil sump

qùniándǐ

去年底

[去年底]

late last year
the end of last year

tiāndǐxia

天底下

[天底下]

in this world
under the sun

Mǐdǐyà

米底亚

[米底亞]

Media (ancient Middle east region)

yǎndǐxia

眼底下

[眼底下]

in front of one's eyes
in full view as a panorama
right now

hǎidǐyē

海底椰

[海底椰]

coco de mer or "sea coconut" (Lodoicea maldivica)

hǎidǐlún

海底轮

[海底輪]

muladhara, the root or Saturn chakra, residing in the coccyx

pīndàodǐ

拼到底

[拼到底]

to brave it out
to the bitter end

Xīluódǐ

希罗底

[希羅底]

Herodium (town in biblical Judea)

sīdǐxia

私底下

[私底下]

privately
secretly
confidentially

diàndǐr

垫底儿

[墊底兒]

erhua variant of 墊底／垫底 (diàndǐ)

wúdǐdòng

无底洞

[無底洞]

bottomless pit

liàngdǐpái

亮底牌

[亮底牌]

to show one's hand
to lay one's cards on the table

Dǐtèlü

底特律

[底特律]

Detroit, Michigan

dǐcháotiān

底朝天

[底朝天]

upside down
upturned

píngdǐguō

平底锅

[平底鍋]

frying pan

diàndǐfèi

垫底费

[墊底費]

deductible (the part of an insurance claim paid by the insured)
(UK English) excess

fēngdǐlǐ

封底里

[封底裡]

inside back cover

Nuòmàndǐ

诺曼底

[諾曼底]

Normandy, France

shuōdàodǐ

说到底

[說到底]

in the final analysis
in the end

hòudǐxié

厚底鞋

[厚底鞋]

platform shoes

tǎodǐr

讨底儿

[討底兒]

erhua variant of 討底／讨底 (tǎodǐ)

Hǎidǐlāo

海底捞

[海底撈]

Haidilao (aka Hai Di Lao), hot pot restaurant chain founded in Sichuan in 1994

gǔpéndǐ

骨盆底

[骨盆底]

pelvic floor (anatomy)

yángdǐdìqiào

洋底地壳

[洋底地殼]

oceanic crust (geology)

guīgēndàodǐ

归根到底

[歸根到底]

after all
in the final analysis
ultimately

Yīluòwǎdǐ

伊洛瓦底

[伊洛瓦底]

Irrawaddy or Ayeyarwaddy River, the main river of Myanmar (Burma)

xúngēnwèndǐ

询根问底

[詢根問底]

lit. to examine roots and inquire at the base (idiom); to get to the bottom of sth

Xiūxīdǐdé

修昔底德

[修昔底德]

Thucydides (c. 455 - c. 400 BC), Greek historian, author of the History of the Peloponnesian War

xiēsīdǐlǐ

歇斯底里

[歇斯底里]

hysteria (loanword)
hysterical

guīgēnjiédǐ

归根结底

[歸根結底]

in the final analysis
ultimately

Nuòmàndǐrén

诺曼底人

[諾曼底人]

Norman (people)

jǐngdǐzhīwā

井底之蛙

[井底之蛙]

the frog at the bottom of the well (idiom)
fig. a person of limited outlook and experience

jīdǐdòngmài

基底动脉

[基底動脈]

basilar artery (central artery of the brain)

pángēnjiūdǐ

盘根究底

[盤根究底]

lit. to examine roots and inquire at the base (idiom); to get to the bottom of sth

zhuīgēnxúndǐ

追根寻底

[追根尋底]

see 追根究底 (zhuīgēnjiūdǐ)

guīgēnjiūdǐ

归根究底

[歸根究底]

(idiom) in the final analysis

diēzhìgǔdǐ

跌至谷底

[跌至谷底]

to hit rock bottom (idiom)

xúngēnwèndǐ

寻根问底

[尋根問底]

lit. to examine roots and inquire at the base (idiom); to get to the bottom of sth

Gāngdǐsīshān

冈底斯山

[岡底斯山]

Mt Gangdisê (6656m) in southwest Tibet, revered by Tibetans as the center of the universe

qīngchètòudǐ

清澈透底

[清澈透底]

(of a body of water) clear enough to see the bottom
limpid

dǐqīshēngwù

底栖生物

[底棲生物]

benthos

shuǐdǐxiàngjī

水底相机

[水底相機]

underwater camera

Nígēdǐmǔ

尼哥底母

[尼哥底母]

Nicodemus, prominent Jew of the time of Christ, mentioned in the Gospel of John

Edǐpǔsī

俄底浦斯

[俄底浦斯]

Oedipus, legendary king of Thebes who killed his father and married his mother

pángēnwèndǐ

盘根问底

[盤根問底]

lit. to examine roots and inquire at the base (idiom); to get to the bottom of sth

Sūgélādǐ

苏格拉底

[蘇格拉底]

Socrates (469-399 BC), Greek philosopher
José Sócrates (1957-), prime minister of Portugal (2005-2011)

yǎnpídǐxia

眼皮底下

[眼皮底下]

in front of one's eyes

zìdǐxiàngshàng

自底向上

[自底向上]

bottom-up

wàihuìcúndǐ

外汇存底

[外匯存底]

foreign exchange reserves (Tw)

Dǐgélǐsī

底格里斯

[底格里斯]

Tigris River, Iraq

běndǐdiàochá

本底调查

[本底調查]

background investigation

páogēnwèndǐ

刨根问底

[刨根問底]

to dig up roots and inquire at the base (idiom); to get to the bottom of sth

zhuīgēnwèndǐ

追根问底

[追根問底]

lit. to examine roots and inquire at the base (idiom); to get to the bottom of sth

Yīluòwǎdǐ

依洛瓦底

[依洛瓦底]

Irrawaddy or Ayeyarwady River, the main river of Myanmar

fǔdǐchōuxīn

釜底抽薪

[釜底抽薪]

to take drastic measures to deal with a situation
to pull the carpet from under sb

hǎidǐkuòzhāng

海底扩张

[海底擴張]

seafloor spreading (geology)

fǔdǐyóuyú

釜底游鱼

[釜底游魚]

a fish at the bottom of the pot (idiom)
in a desperate situation

yīyúhúdǐ

伊于胡底

[伊於胡底]

where will it stop?

hǎidǐlāozhēn

海底捞针

[海底撈針]

see 大海撈針／大海捞针 (dàhǎilāozhēn)

zhàopiàndǐbǎn

照片底版

[照片底版]

a photographic plate

shēnbùjiàndǐ

深不见底

[深不見底]

so deep one cannot see to the bottom
limitless

zhuīgēnjiūdǐ

追根究底

[追根究底]

to get to the heart of the matter

bāofudǐr

包袱底儿

[包袱底兒]

family heirloom
most precious family possession
person's secrets
one's best performance

běndǐfúshè

本底辐射

[本底輻射]

background radiation

hǎidǐlāoyuè

海底捞月

[海底撈月]

see 水中撈月／水中捞月 (shuǐzhōnglāoyuè)

qiǎngbiàndàodǐ

强辩到底

[強辯到底]

to argue endlessly
to try to have the last word

běndǐjìshù

本底计数

[本底計數]

background count

qīngchèjiàndǐ

清澈见底

[清澈見底]

water so clear you can see the bottom

jìnshōuyǎndǐ

尽收眼底

[盡收眼底]

to take in the whole scene at once; to have a panoramic view

yǎnpízidǐxià

眼皮子底下

[眼皮子底下]

right in front of sb's eyes
right under sb's nose
current
at the moment

zúdǐjīnmóyán

足底筋膜炎

[足底筋膜炎]

plantar fasciitis (medicine)

jīdǐxìbāo'ái

基底细胞癌

[基底細胞癌]

basal cell carcinoma

Gāngdǐsīshānmài

冈底斯山脉

[岡底斯山脈]

Gangdisê mountain range in southwest Tibet

hǎojiǔchénwèngdǐ

好酒沉瓮底

[好酒沉甕底]

lit. the best wine is at the bottom of the jug (idiom)
fig. the best is saved for last

hǎidǐkuòzhāngshuō

海底扩张说

[海底擴張說]

theory of seafloor spreading (geology)

Yòufālādǐ Hé

幼发拉底河

[幼發拉底河]

Euphrates River

Xībōkèlādǐ

希波克拉底

[希波克拉底]

Hippocrates (c. 460 BC - c. 370 BC), Greek physician, father of Western medicine

zhuīgēnjiūdǐr

追根究底儿

[追根究底兒]

erhua variant of 追根究底 (zhuīgēnjiūdǐ)

Nuòmàndǐ Bàndǎo

诺曼底半岛

[諾曼底半島]

Normandy peninsula

dǐqīyǒukǒngchóng

底栖有孔虫

[底棲有孔蟲]

benthic foraminifera

Dǐgélǐsī Hé

底格里斯河

[底格里斯河]

Tigris River, Iraq

Yīluòwǎdǐ Jiāng

伊洛瓦底江

[伊洛瓦底江]

Irrawaddy or Ayeyarwaddy River, the main river of Myanmar (Burma)

Ebādǐyàshū

俄巴底亚书

[俄巴底亞書]

Book of Obadiah

Edǐpǔsīqíngjié

俄底浦斯情结

[俄底浦斯情結]

Oedipus complex

Xiūxīdǐdéxiànjǐng

修昔底德陷阱

[修昔底德陷阱]

Thucydides trap (theory that war results when a dominant established power fears the rise of a rival power)

tiàochūfǔdǐjìnhuǒkēng

跳出釜底进火坑

[跳出釜底進火坑]

out of the frying pan into the fire (idiom)

Yīluòwǎdǐ Sānjiǎozhōu

伊洛瓦底三角洲

[伊洛瓦底三角洲]

Irrawaddy Delta in south Myanmar (Burma)

dàshùdǐxiàhǎochéngliáng

大树底下好乘凉

[大樹底下好乘涼]

lit. under a big tree the shade is plentiful (idiom)
fig. to benefit by proximity to an influential person

dǎpòshāguōwèndàodǐ

打破砂锅问到底

[打破砂鍋問到底]

to go to the bottom of things (idiom)