atavistic
1 of 1adjective/ˌætəˈvɪstɪk/
1
showing traits or behaviors that resemble those of distant ancestors, often primitive or ancient in nature
- His sudden aggression was an atavistic throwback to humanity's primal instincts.
- The ritual was full of atavistic symbols from ancient times.
- Her fear of the dark seemed almost atavistic.
- The tribe maintained atavistic hunting traditions.
- The howl carried an atavistic quality that stirred something deep inside them.
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