- preeners
- 'prɪËnÉ™(r) n. one who dresses up, one who beautifies himself, one who primps
English contemporary dictionary. 2014.
English contemporary dictionary. 2014.
Competitive altruism — is a possible mechanism for the persistence of cooperative behaviors, specifically those that are performed unconditionally. The theory of reciprocal altruism can be used to explain behaviors that are performed by a donor who receives some sort… … Wikipedia