Definitions from Wiktionary (Act.)

▸ noun:  Abbreviation of Acts.
▸ 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.]]

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