reciprocity

From Wiktionary

Noun[change]

Singular
reciprocity

Plural
reciprocities

  1. (uncountable) Reciprocity is a relationship in which a something is given, and something is expected back in return.
  2. (uncountable) Reciprocity is a relationship which means quid pro quo or "fair trade".
    You scratch my back, and I'll scratch your back: that's reciprocity.

Related words[change]