五段動詞(す)他動詞
to begin to say; to start talking; to broach (a matter); to bring up; to come out with
我々が静かに夕食をとっていると、突然、母がもう一度学校に行くつもりだと言い出した。
- We were having a quiet supper when out of the blue my mother announced she was going back to school.
そんな事言い出すとは思わなかったよ。
- I didn't expect that to come from you.