Usage of the character 效

potency
titer (measure of effective concentration in virology or chemical pathology, defined in terms of potency after dilution by titration)
valence (perceived value in psychology)
valency

xiàofǎng

效仿

[傚仿]

see 仿傚／仿效 (fǎngxiǎo)

zōngxiào

综效

[綜效]

synergy

jiànxiào

见效

[見效]

to have the desired effect

zòuxiào

奏效

[奏效]

to show results; to be effective

yǒuxiào

有效

[有效]

effective
in effect
valid

xiàoláo

效劳

[效勞]

to serve (in some capacity)
to work for

xiàonéng

效能

[效能]

efficacy
effectiveness

xiàoyì

效益

[效益]

benefit
effectiveness
efficiency

chéngxiào

成效

[成效]

effect
result

xiàoyàn

效验

[效驗]

(desired) effect
(expected) result
effective

wúxiào

无效

[無效]

not valid
ineffective
in vain

shēngxiào

生效

[生效]

to take effect
to go into effect

shēngxiào

声效

[聲效]

sound effect

jìxiào

绩效

[績效]

performance
results
achievement

féixiào

肥效

[肥效]

effectiveness of fertilizer

shīxiào

失效

[失效]

to fail
to lose effectiveness

néngxiào

能效

[能效]

energy efficiency

sùxiào

速效

[速效]

quick results
fast-acting

qíxiào

奇效

[奇效]

wondrous effect
marvelous efficacy

xiǎnxiào

显效

[顯效]

to show an effect
to produce an effect
a conspicuous effect

xiàozhōng

效忠

[效忠]

to vow loyalty and devotion to

bàoxiào

报效

[報效]

render service to repay kindness

fǎngxiào

仿效

[仿傚]

to copy; to imitate

xiàoguǒ

效果

[效果]

result
effect
efficacy
(theater) sound or visual effects

xiàolü

效率

[效率]

efficiency

shíxiào

时效

[時效]

timeliness
period of viability or validity
(law) prescription; limitation
(metallurgy) aging

yīnxiào

音效

[音效]

sound effect

xiàolì

效力

[效力]

effectiveness
positive effect
to serve (in some capacity)

liáoxiào

疗效

[療效]

healing efficacy; healing effect

bìxiàoyìng

壁效应

[壁效應]

wall effect

yǎngxiàoyìng

氧效应

[氧效應]

oxygen effect

yǒuxiàoxìng

有效性

[有效性]

validity

tèxiàoyào

特效药

[特效藥]

effective medicine for a specific condition
highly effective medicine

guāngyǐngxiào

光影效

[光影效]

lighting effect

shíxiàoxìng

时效性

[時效性]

sensitivity to timing
time-sensitive
timeliness

xiàoguǒtú

效果图

[效果圖]

rendering (visual representation of how things will turn out)

shíxiàofǎ

时效法

[時效法]

(law) statute of limitations

fǒuyǒuxiào

否有效

[否有效]

inefficient

gāoxiàonéng

高效能

[高效能]

highly efficient
effectivity

gāoxiàolü

高效率

[高效率]

high efficiency

xiàojiànéng

效价能

[效價能]

potency
titer (measure of effective concentration in virology or chemical pathology, defined in terms of potency after dilution by titration)

yǒuxiàoqī

有效期

[有效期]

period of validity
sell-by date

wúxiàoshèjiāo

无效社交

[無效社交]

unproductive social interaction

hánchánxiàoyìng

寒蝉效应

[寒蟬效應]

the chilling effect of a climate of fear in which people are afraid to speak their mind

xíngzhīyǒuxiào

行之有效

[行之有效]

to be effective (idiom)

jìliàngxiàoyìng

剂量效应

[劑量效應]

dose effect

zǎoqīxiàoyìng

早期效应

[早期效應]

early effect

háowúxiàoguǒ

毫无效果

[毫無效果]

to no avail
achieving nothing
totally ineffective
to have no effect
to fall flat (esp. of joke or speech that is completely ignored)

shīxiàorìqī

失效日期

[失效日期]

expiry date (of document)

jīnggàngāoxiào

精干高效

[精幹高效]

top-notch efficiency

yìchūxiàoyìng

溢出效应

[溢出效應]

spillover effect

yǐjǐngxiàoyóu

以儆效尤

[以儆效尤]

(idiom) to warn against following bad examples; as a warning to others

xiàozhōngshìcí

效忠誓词

[效忠誓詞]

pledge of allegiance

jīngjìyǒuxiào

经济有效

[經濟有效]

cost-effective

yǒuxiàorìqī

有效日期

[有效日期]

expiration date; expiry date

jiāgōngxiàolü

加工效率

[加工效率]

processing efficiency

róngjīxiàolü

容积效率

[容積效率]

volumetric efficiency (engine technology)

yǒuxiàofùzài

有效负载

[有效負載]

payload

cíxīxiàoyìng

磁吸效应

[磁吸效應]

"magnetic" force that attracts investment and talented individuals
in particular, the attraction China has for people and capital from around the world

Dōng Shīxiàopín

东施效颦

[東施效顰]