Sentence examples for for proof of reciprocation from inspiring English sources

Having given all her love to someone, she waits for proof of reciprocation.

Although we could not rule out the role of long-term reciprocation, chimpanzees' targeted helping behavior was not in this case maintained by short-term reciprocation.

For proof of both, just ask George Osborne.

Bonus points for proof of concept.

Looking for proof of concept?

We ask for proof of a God.

Bonus points for proof of maintenance.

Request a receipt for proof of payment.

Read any interview for proof of this.

Fantasizing about or searching obsessively for signs of reciprocation ("reading into things").

Some games have no chance of a future payoff for being nice; other games allow for the possibility of reciprocation.