Usage of the character 懂

to understand
to comprehend

nòngdǒng

弄懂

[弄懂]

to make sense of
to grasp the meaning of
to figure out

tīngdǒng

听懂

[聽懂]

to understand (on hearing)
to catch (what is spoken)

yìdǒng

易懂

[易懂]

easy to understand

dǒngshì

懂事

[懂事]

to grow beyond the naivete of childhood; to be aware of what is going on in the world
(esp. of a child) sensible; thoughtful; intelligent

miǎodǒng

秒懂

[秒懂]

to understand instantly

dǒngyǎn

懂眼

[懂眼]

(coll.) to know the ropes
an expert

dǒngháng

懂行

[懂行]

to know the ropes

dǒngde

懂得

[懂得]

to understand; to know; to comprehend

dúdǒng

读懂

[讀懂]

to read and understand

nándǒng

难懂

[難懂]

difficult to understand

měngdǒng

懵懂

[懵懂]

confused
ignorant

dǒngjú

懂局

[懂局]

to know the business
to know the ropes
in the know
to know one's onions
professional
au fait

kàndǒng

看懂

[看懂]

to understand what one is reading or watching

gǎobudǒng

搞不懂

[搞不懂]

unable to make sense of (sth)

dǒngménr

懂门儿

[懂門兒]

one who knows his business
professional
expert
au fait

nòngbudǒng

弄不懂

[弄不懂]

unable to make sense of (sth)

kědǒngdù

可懂度

[可懂度]

intelligibility

tīngdedǒng

听得懂

[聽得懂]

to understand (by hearing)
to catch (what sb says)

kànbudǒng

看不懂

[看不懂]

unable to make sense of what one is looking at

tīngbudǒng

听不懂

[聽不懂]

unable to make sense of what one is hearing

bùdǒngzhuāngdǒng

不懂装懂

[不懂裝懂]

to pretend to understand when you don't

měngměngdǒngdǒng

懵懵懂懂

[懵懵懂懂]

confused
ignorant

sìdǒngfēidǒng

似懂非懂

[似懂非懂]

to not really understand
to half-understand

nòngdǒngnòngtōng

弄懂弄通

[弄懂弄通]

to get a thorough understanding of sth (idiom)

bàndǒngbùdǒng

半懂不懂

[半懂不懂]

to not fully understand
to only partly understand

qiǎnxiǎnyìdǒng

浅显易懂

[淺顯易懂]

easy to understand

tōngsúyìdǒng

通俗易懂

[通俗易懂]

easy to understand

zìdǒngshìyǐlái

自懂事以来

[自懂事以來]

for as long as one can remember

cōngmingyīshì,měngdǒngyīshí

聪明一世，懵懂一时

[聰明一世，懵懂一時]

see 聰明一世，糊塗一時／聪明一世，糊涂一时 (cōngmingyīshì,hútuyīshí)