Definitions:

1. In biology, refers to organisms or traits that deviate from the standard form or function. ADJECTIVE
   • The researchers studied the aberrant wing pattern in the butterfly population.
2. Used to describe actions or behaviors that are abnormal or deviate from societal norms. ADJECTIVE
   • The child's aberrant behavior concerned the teachers and prompted a meeting with his parents.
3. Used to describe something that deviates from what is normal, expected, or typical. ADJECTIVE
   • The scientist noted the aberrant data point, which did not fit the expected pattern.

Synonyms:

• abnormal
• Anomalous
• atypical
• deviant
• irregular