Relating to, characteristic of, or resembling geese; goose-like in appearance or behavior.
From Latin 'anserinus' meaning 'of or belonging to geese,' derived from 'anser' plus the adjectival suffix '-inus,' used in scientific and descriptive contexts.
Medieval people used 'anserin' as an insult meaning 'acting like a goose'—they thought geese were silly, so calling someone anserin was basically saying they're a goofball.
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