1clean
2completely
3only
4net (income, exports etc)
5(Chinese opera) painted face male role
Examples
bù不gān干bú不jìng净，chī吃le了méi没bìng病。
不干不净，吃了没病。
It may not be clean, but you won't get sick from eating it.
因为在甲级联赛中，所有队伍都很有实力，净胜球差异很小。
Because all of the teams in the Premier League are really strong, the goal difference is usually small.
走廊每天早上都清扫得干干净净。
Every morning, the corridor was swept clean.