back and forth

行ったり来たり、前後に

一方へ進んでは逆方向へ進むことを繰り返して。

やさしい英語で： Moving repeatedly in one direction and then in the opposite direction.

• The swing moved back and forth.
• He walked back and forth across the room.
• Why are you rocking back and forth?

類義語： to and fro, backwards and forwards

よく使う表現： walk back and forth, swing back and forth

迷いながら、あれこれと

いくつかの選択肢や意見の間で、何度も考えを変えて。

やさしい英語で： Repeatedly changing your choice or opinion between different possibilities.

• I keep going back and forth about moving.
• She went back and forth between buying and renting.
• We went back and forth on the date before finally choosing Friday.

使い方： go back and forth between A and B (I keep going back and forth between the two designs.); go back and forth on something (We went back and forth on whether to sell.)

類義語： indecisively

よく使う表現： go back and forth, back and forth between

やり取り、応酬

互いに何度も返答しながら進める話し合い。

やさしい英語で： A discussion in which people keep replying to each other.

• There was some back-and-forth about the price.
• After weeks of back-and-forth, they signed the agreement.
• I enjoyed the lively back-and-forth between the speakers.

使い方： back and forth between people (There was some back-and-forth between the buyer and seller.); back and forth over something (We had a long back-and-forth over the price.)

類義語： exchange, discussion, dialogue

よく使う表現： some back and forth, endless back and forth

往復運動、揺れ

一方へ進んで出発点へ戻ることを繰り返す動き。

やさしい英語で： Repeated movement in one direction and then back to the starting point.

• The back-and-forth of the swing calmed her.
• I watched the steady back-and-forth of the pendulum.
• The boat’s constant back-and-forth made him feel ill.

類義語： to-and-fro, oscillation

よく使う表現： constant back and forth, gentle back and forth

往復する、前後に動く

向きを何度も逆に変える動きを表す。

やさしい英語で： Describing movement that repeatedly changes to the opposite direction.

• The back-and-forth motion made me sleepy.
• Use a gentle back-and-forth movement with the brush.
• The machine produces a steady back-and-forth motion.

類義語： to-and-fro, reciprocating

よく使う表現： back and forth movement, back and forth motion

行ったり来たりする、迷う

逆方向への移動を繰り返したり、選ぶものを何度も変えたりする。

やさしい英語で： To move repeatedly in opposite directions or keep changing between choices.

• We back and forth over every little decision.
• They back-and-forthed between the two plans for weeks.
• The vans back and forth between the warehouses all day.

使い方： back and forth between A and B (We back and forth between these options every week.)

類義語： shuttle, vacillate

よく使う表現： back and forth between, back and forth endlessly