atavism
a
ˈæ
ā
ta
vi
vi
sm
zəm
zēm
/ˈateɪvˌɪzəm/

Definition & Meaning of "atavism"in English

Atavism
01

an ancestral or ancient trait, feeling, outlook, activity, etc. that modern humans revert to

Examples
The sudden aggression he displayed seemed like an atavism from a primal past.
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