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返す， 反す， かえす
1. to return (something), to restore, to put back
2. to turn over, to turn upside down, to overturn
3. to pay back, to retaliate, to reciprocate
4. to respond (with), to retort, to reply, to say back
5. to do ... back (e.g. speak back, throw back)
6....
返还；回应（以），反驳，答复，回敬；做……回来（例如：顶嘴，扔回去）；再做，反复做
