to decide to do something without being asked or required
頼まれたり要求されたりせずに何かをすることを決める (tanomaretari youkyuusaretari sezu ni nanika wo suru koto wo kimeru)
"She decided to take it upon herself to organize the event."
"彼女はイベントを組織する責任を自分で引き受けることに決めました。" (Kanojo wa ibento wo soshiki suru sekinin wo jibun de hikiukeru koto ni kimemashita)
something very complicated or difficult to understand
to suspect something wrong or dishonest
to be in a very difficult or desperate situation
to be ruthless or extremely determined in achieving somethin...
to improve something significantly; to advance to a higher s...
To spend less; to live frugally.
