Verb (5-dan, る, intransitive)
1. to rot; to go bad; to decay; to spoil; to fester; to decompose; to turn sour (e.g. milk)
2. to corrode; to weather; to crumble
3. to become useless; to blunt; to weaken (from lack of practice)
4. to become depraved; to be degenerate; to be morally bankrupt; to be corrupt
5. to be depressed; to be dispirited; to feel discouraged; to feel down
Auxiliary verb (5-dan, る)
Usually written in kana
Kansai-ben
6. to have the audacity to; to be bastard enough to
after the -masu stem of a verb; indicates scorn or disdain for another's action
Archaic
Verb (5-dan, る, intransitive)
7. to lose a bet
8. to be drenched; to become sopping wet