Definition of "atavistically" [atavistically]

• In an atavistic manner. (adverb)

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• "But, if I am beginning to be reconciled to their presence, Mother's state can only be described as atavistically maternal."
• "The idea of grievance seems to define them in some eternal way and link them atavistically to a community of loved ones."
• "The 4-winged homeotic mutants have changed the Hox mutation so that they atavistically recover the ancestral 4-winged insect condition, and never develop halteres."