殆 殆 dai4
dangerous; perilous; to endanger; almost; probably; only

strokes 9
radical
歹
歹
strokes after radical 5
百战不殆 百戰不殆 bai3 zhan4 bu4 dai4
to come unscathed through a hundred battles (idiom, from Sunzi's "The Art of War" 孫子兵法|孙子兵法); to win every fight

殆尽 殆盡 dai4 jin4
nearly exhausted; practically nothing left

丧失殆尽 喪失殆盡 sang4 shi1 dai4 jin4
to be used up; to be exhausted

危殆 危殆 wei1 dai4
grave danger; in jeopardy; in a critical condition

学而不思则罔，思而不学则殆 學而不思則罔，思而不學則殆 xue2 er2 bu4 si1 ze2 wang3 - si1 er2 bu4 xue2 ze2 dai4
To learn without thinking is confusing, to think without learning is dangerous (Confucius)

知彼知己，百战不殆 知彼知己，百戰不殆 zhi1 bi3 zhi1 ji3 - bai3 zhan4 bu4 dai4
knowing the enemy and yourself will get you unscathed through a hundred battles (idiom, from Sunzi's "The Art of War")

知己知彼，百战不殆 知己知彼，百戰不殆 zhi1 ji3 zhi1 bi3 - bai3 zhan4 bu4 dai4
know yourself and know your enemy, and you will never be defeated (idiom, from Sunzi's "The Art of War" 孫子兵法|孙子兵法)