か	え
返

す

Godan verb, transitive verb

1. to return (something), to restore, to put back. Esp. 返す.
2. to turn over, to turn upside down, to overturn.
3. to pay back, to retaliate, to reciprocate. Esp. 返す.
4. to respond (with), to retort, to reply, to say back.

auxiliary verb, Godan verb

1. to do ... back (e.g. speak back, throw back).
2. to do again, to do repeatedly.