怠

不怠

bù dài

unremitting in one's efforts

不懈怠

bù xiè dài

untiring

倦怠

juàn dài

worn out

怠工

dài gōng

to slacken off in one's work

怠忽

dài hū

to neglect

怠惰

dài duò

idleness

怠慢

dài màn

to slight

懈怠

xiè dài

slack

懒怠

lǎn dài

lazy

职业倦怠症

zhí yè juàn dài zhèng

professional boredom syndrome