百 思 不 解 bǎi sī bù jiě : remain puzzled after pondering over sth; a hundred times; remain perplexed despite much thought

鼻 祖 bí zǔ : the earliest ancestor; originator (of a tradition, school of thought, etc)

表 裡 biǎo lǐ : the outside and the inside; one's outward show and inner thoughts; exterior and interior

不 注 意 bù zhù yì : thoughtless; not pay attention to

懂 事 dǒng shì : sensible; thoughtful; intelligent

苟 gǒu : (surname); if indeed; thoughtless

Big5: , Unicode: 82df (苟),
Links: MT, Cantonese, Ld, Chinese Language

茍 gǒu : (surname); if indeed; thoughtless

Big5: , Unicode: 830d (茍),
Links: MT, Cantonese, Ld, Chinese Language

觀 念 guān niàn : notion; thought

混 hùn : to mix; to get along; thoughtless

Big5: , Unicode: 6df7 (混),
Links: MT, Cantonese, Ld, Chinese Language

流 派 liú pài : school (of thought)

懃 «勤» qín : solicitous; thoughtful

Big5: , Unicode: 61c3 (懃),
Links: MT, Cantonese, Ld, Chinese Language

思 維 sī wéi : (line of) thought; thinking

思 想 sī xiǎng : thought; thinking; idea

慝 tè : evil thought

Big5: , Unicode: 615d (慝),
Links: MT, Cantonese, Ld, Chinese Language

臆 yì : feelings; opinion; thoughts

Big5: , Unicode: 81c6 (臆),
Links: MT, Cantonese, Ld, Chinese Language

周 zhōu : (surname); complete; encircle; circuit; lap; week; cycle; all; every; attentive; thoughtful

Big5: , Unicode: 5468 (周),
Links: MT, Cantonese, Ld, Chinese Language

週 到 zhōu dào : thoughtful; considerate