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to return (something); to restore; to put back
to turn over; to turn upside down; to overturn
to pay back; to retaliate; to reciprocate
to respond (with); to retort; to reply; to say back
to do ... back (e.g. speak back, throw back)
to do again; to do repeatedly
借りた本を友達に反した。
I returned the book I borrowed to my friend.
友だちにお金を反すつもりだ。
I plan to pay my friend back.
もとの場所に反してくださいね。
Please put it back where it was.