As a verb reciprocated
As an adjective unreturned is
not returned; unrequited; not reciprocated.
To mutually give and take something; to interchange.
To give something in response.
To move backwards and forwards, like a piston.
To counter, retort or retaliate.
- One brawny smith the puffing bellows plies, / And draws and blows reciprocating air.
Not returned; unrequited; not reciprocated.