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

• sinking fund
• sinking funds
• sinkings
• sinks
• sink unit
• sink units
• sinky
• sinless
• sinlessly
• sinlessness
• sinlessnesses
• sinned
• sinner
• sinner it
• sinners
• sinnet
• sinnets
• Sinn Fein
• Sinn Feiner
• spermary
• spermat-
• spermatheca
• spermathecae
• spermathecal
• spermatia