互恵 ごけい てき利他 りた主義 しゅぎじゃなかったです
gokeite kirita shugijanakattadesu

Noun
Desu Copula

The polite, past negative form of 互恵的利他主義

1. Wasn't mutually altruistic.; Wasn't reciprocal altruism.

Past/Perfective
Negative
Polite
Casual Register