Usage of the character 优

outstanding student
to give birth to healthy babies (typically involving prenatal screening and the abortion of offspring with a severe abnormality)
to enhance the genetic quality of a population; eugenics

cóngyōu

从优

[從優]

preferential treatment
most favored terms

yōuliè

优劣

[優劣]

good and bad
merits and drawbacks

yōuxuǎn

优选

[優選]

to optimize
preferred

yōuxiān

优先

[優先]

to have priority; to take precedence

nüyōu

女优

[女優]

actress

shēngyōu

声优

[聲優]

voice actor (orthographic borrowing from Japanese 声優 "seiyū")

yōuyì

优异

[優異]

exceptional; outstandingly good

yōuhuì

优惠

[優惠]

privilege
favorable (terms)
preferential (treatment)
discount (price)

Yōu Mèng

优孟

[優孟]

You Meng, famous court jester during the reign of King Zhuang of Chu 楚莊王／楚庄王 ( Chǔ Zhuāngwáng), known for his intelligence and sharp tongue

yōuxiù

优秀

[優秀]

outstanding; excellent

yōuhuà

优化

[優化]

to optimize

zīyōu

资优

[資優]

(Tw) (of a student) gifted

chuàngyōu

创优

[創優]

to strive for excellence

zhànyōushì

占优势

[佔優勢]

to predominate
to occupy a dominant position

yōudàipiào

优待票

[優待票]

reduced-price ticket (e.g. for students)

yōudàiquàn

优待券

[優待券]

discount coupon
complimentary ticket

Aì Yōu Téng

爱优腾

[愛優騰]

abbr. for iQiyi 愛奇藝／爱奇艺 ( Aì Qíyì) + Youku 優酷／优酷 ( Yōukù) + Tencent 騰訊／腾讯 ( Téngxùn)

Gě Yōutǎng

葛优躺

[葛優躺]

see 北京癱／北京瘫 ( Běijīngtān)

zuìyōujiě

最优解

[最優解]

optimal solution

yōuyìjiǎng

优异奖

[優異獎]

excellence award
merit award

yōuxiānjí

优先级

[優先級]

(computing) priority level
(computing) precedence (of operators)

yōuhuìquàn

优惠券

[優惠券]

coupon

Yōuníkē

优尼科

[優尼科]

Unocal (US oil company)

yōuxiāngǔ

优先股

[優先股]

preferred stock

fùyōuhuà

负优化

[負優化]

to degrade the performance of a sold product via a system update

yōuluòrǔ

优酪乳

[優酪乳]

yogurt (loanword) (Tw)

zīyōubān

资优班

[資優班]

(Tw) class composed of gifted students

yōushēngxué

优生学

[優生學]

eugenics

Yōuyīkù

优衣库

[優衣庫]

Uniqlo, Japanese clothing brand

Yōunuòpái

优诺牌

[優諾牌]

Uno (card game)

zuìyōuhuà

最优化

[最優化]

optimization (math.)

zīyōushēng

资优生

[資優生]

brilliant student

jìyōugǔ

绩优股

[績優股]

gilt-edged stock
blue chip stock

pǐnxuéjiānyōu

品学兼优

[品學兼優]

excelling both in morals and studies (idiom); top marks for studies and for behavior (at school)
a paragon of virtue and learning

yōuyóuzìdé

优游自得

[優遊自得]

free and at leisure (idiom); unfettered

yōushèngliètài

优胜劣汰

[優勝劣汰]

survival of the fittest (idiom)

shúyōushúliè

孰优孰劣

[孰優孰劣]

which of the two is better?

yǎngzūnchǔyōu

养尊处优

[養尊處優]

to live like a prince (idiom)

yōuróuguǎduàn

优柔寡断

[優柔寡斷]

indecisive
irresolute

yōuzāiyóuzāi

优哉游哉

[優哉遊哉]

see 悠哉悠哉 (yōuzāiyōuzāi)

bèiyōuhuàdiào

被优化掉

[被優化掉]

to be made redundant

nüshìyōuxiān

女士优先

[女士優先]

Ladies first!

yōuhuìdàikuǎn

优惠贷款

[優惠貸款]

loan on favorable terms
concessionary loan
soft loan

yōushènglièbài

优胜劣败

[優勝劣敗]

see 優勝劣汰／优胜劣汰 (yōushèngliètài)

cíyōuxiàoyìng

词优效应

[詞優效應]

word superiority effect

xué'éryōuzéshì

学而优则仕

[學而優則仕]

one who is successful in one's studies, can become an official (idiom)

yōuxiānchénggòuquán

优先承购权

[優先承購權]

prior purchase right
right of first refusal (ROFR)
preemptive right to purchase

Pàlèituōzuìyōu

帕累托最优

[帕累托最優]

Pareto efficiency (economics)
Pareto optimality

yōuxiānrèngǔquán

优先认股权

[優先認股權]

preemptive right (in share issue)