亏
kuī
I v.
1) lose (money/etc.); have a deficit
2) treat unfairly
我从来没有亏过他。 I've never been unfair to him.
3) wane
4) lack
II s.v.
deficient; short
III adv.
fortunately; luckily; thanks to (sometimes mockingly)
这事(儿)亏你提醒他。 It's fortunate that you reminded him of the matter.