锐

避其锐气，击其惰归

bì qí ruì qì , jī qí duò guī

avoid the enemy when he is fresh and strike him when he is tired and withdraws (idiom)

锐不可当

ruì bù kě dāng

unstoppable

锐利

ruì lì

sharp

锐化

ruì huà

to sharpen

锐志

ruì zhì

firm determination

锐意

ruì yì

acute determination

锐敏

ruì mǐn

acute

锐步

ruì bù

Reebok (sportswear manufacturer)

锐气

ruì qì

acute spirit

锐减

ruì jiǎn

steep decline

锐角

ruì jiǎo

acute angle

锐评

ruì píng

(neologism) incisive commentary (abbr. for 銳利評論|锐利评论[rui4 li4 ping2 lun4])