early 15c., restyffe "not moving forward," from Middle French restif "motionless, brought to a standstill" (Modern French rétif), from rester "to remain" (see rest (n.2)). Sense of "unmanageable" (1680s) evolved via notion of a horse refusing to go forward.
例文
1. The crowd grew restive .
大衆は次第に騒がしくなってきた.
2.The government has done nothing to ease restrictions and manufactures are growing restive .
政府は輸出規制を緩和する措置を取っていないため、国内メーカーは不安になっている。
3.The audience grew restive .
視聴者がいらいらしてきた。
4.Another hour passed and the crowd grew/became restive .
また1時間が過ぎて、人々は少しいらいらしてきた。
5.When the singer was late,the audience grew restive .