A passive attitude won't solve the problem.
Prevention of passive smoking is important.
He always takes a passive attitude.
In that negotiation, I was put in a passive position.
activity; activeness; proactive
受動 is a more literary/formal word meaning 'passive' in general contrast to 能動, while 受け身 is the common everyday term with broader use including martial arts.
Compound of 受 (receive) and 動 (move, action), literally 'receiving action'. The term is a Sino-Japanese word used to express passivity.
passive-aggressive