atavism /atˈə-vi-zm/

1. The reappearance of ancestral, but not parental, characteristics
2. Reversion to an ancestral, or to a primitive, type

atavistˈic adjective

atavistˈically adverb

• introspection
• introspectionist
• introspectionists
• introspections
• introspective
• introspectively
• introspectiveness
• introspects
• introsusception
• in trouble
• introversible
• introversion
• introversions
• introversive
• introvert
• introverted
• introverting
• introvertive
• introverts
• intrude
• intruded
• intruder
• intruders
• intrudes
• intruding