| 恰如其分 | qià rú qí fèn | (idiom) appropriate / apt / just right |   |
| 够格 | gòu gé | able to pass muster / qualified / apt / presentable | |
| 适切 | shì qiè | apt / appropriate | |
| 允宜 | yǔn yí | appropriate / apt | |
| 容易 | róng yì | easy / straightforward / likely / liable to / apt to | |
| 适时 | shì shí | timely / apt to the occasion / in due course | |
| 动不动 | dòng bu dòng | (typically followed by 就[jiu4]) apt to (lose one's temper, catch a cold etc) / at the drop of a hat | |
| 善变 | shàn biàn | fickle / mercurial / changeable / capricious / to be apt to change | |
| 搜索枯肠 | sōu suǒ kū cháng | to rack one's brains (for apt wording etc) (idiom) | |
| 蔫儿坏 | niān r huài | apt to do sth nasty or devious in secret | |
| 道高益安，势高益危 | dào gāo yì ān , shì gāo yì wēi | More moral strength increases one's safety, more power and influence increases one's danger (idiom, from Records of the Historian 史記|史记). cf Unlimited power is apt to corrupt the minds of those who possess it (William Pitt the Elder, 1770). | |
