adjective: Abbreviation of acting. [Temporarily assuming the duties or authority of another person when they are unable to do their job.]
adjective: (grammar) Abbreviation of active. [Having the power or quality of acting; causing change; communicating action or motion; acting;—opposed to passive, that receives.]
adjective: Abbreviation of actual. [(chiefly theology) relating to a person's acts or deeds; active, practical]
noun: Abbreviation of activities.
noun: Abbreviation of actor. [(obsolete, law) Someone who institutes a legal suit; a plaintiff or complainant.]
noun: Abbreviation of actuary. [(dated) Registrar, clerk. [16th-19th c.]]
