to greet someone
誰かに挨拶する (dareka ni aisatsu suru)
"Please say hello to your parents for me."
"私のためにあなたの両親に挨拶してください。" (Watashi no tame ni anata no ryoushin ni aisatsu shite kudasai.)
to accept a mistake as a lesson for the future
to seek justice personally rather than through legal authori...
a task completed with great success
succeeding after two failures
a very delicate or risky diplomatic situation
to deliberately provoke or upset someone online