Overactive sister Synonyms

Overactive replaced

Definitions for Overactive


  • (adjective) being in a state of increased activity or agitation
  • (adjective) more active than normal

Synonyms for phrase

OS abbreviation

OS is an abbreviation for Overactive Sister
What does OS stand for?
OS stands for "Overactive Sister"

Sister replaced

Definitions for Sister


  • (noun) a female person who has the same parents as another person
  • (noun) a female person who is a fellow member of a sorority or labor union or other group
  • (noun) ( slang ) sometimes used as a term of address for attractive young women