act — English Dictionary

act
Word-form referencesact of parliamentactually
Pronunciations (6)
  • /ækt/
    Pronunciation notes
    • Australia
    • Received-Pronunciation
    • US
  • [ækt]
    Pronunciation notes
    • Australia
    • Received-Pronunciation
    • US
  • /ækt/
    Pronunciation notes
    • British
    • Canada
    • Northern-England
    • Southern
    • Standard
  • [akt]
    Pronunciation notes
    • British
    • Canada
    • Northern-England
    • Southern
    • Standard
  • /æk/
    Pronunciation notes
    • African-American-Vernacular-English
  • ækt

Noun

  1. Something done, a deed.

    Usage
    • Countable
    Examples

    an act of goodwill

    That best portion of a good man's life, / His little, nameless, unremembered acts / Of kindness and of love.

  2. Actuality.

    Usage
    • Obsolete
    • Uncountable
    Examples

    The seeds of plants are not at first in act, but in possibility, what they afterward grow to be.

  3. Something done once and for all, as distinguished from a work.

    Usage
    • Countable
    • Uncountable
  4. A product of a legislative body, a statute.

    Usage
    • Countable
    Examples
    More examples (1)

    But was it responsible governance to pass the Longitude Act without other efforts to protect British seamen? Or might it have been subterfuge—a disingenuous attempt to shift attention away from the realities of their life at sea.

  5. (In the United States) A legislative proposal, a bill that has not yet become law.

    Usage
    • Countable
    Examples
    More examples (1)

    Under current law, employers can drag out the union election process... Under the PRO Act, workers and the NLRB set union election procedures. The employer is not involved.

  6. The process of doing something.

    Usage
    • Countable
    • Uncountable
    Examples

    He was caught in the act of stealing.

  7. A formal or official record of something done.

    Usage
    • Countable
  8. A division of a theatrical performance.

    Usage
    • Countable
    Examples
    More examples (1)

    “H'm !” he said, “so, so—it is a tragedy in a prologue and three acts. I am going down this afternoon to see the curtain fall for the third time on what […] will prove a good burlesque ; but it all began dramatically enough. It was last Saturday […] that two boys, playing in the little spinney just outside Wembley Park Station, came across three large parcels done up in American cloth. […]”

    The pivotal moment in the play was in the first scene of the second act.

  9. A performer or performers in a show.

    Usage
    • Countable
    Examples

    Which act did you prefer? The soloist or the band?

  10. Any organized activity.

    Usage
    • Countable
    Examples

    The minute you let it be known you're planning a sales campaign everybody wants to get into the act.

  11. A display of behaviour.

    Usage
    • Countable
  12. A display of behaviour. A display of behaviour meant to deceive.

    Usage
    • Countable
    Examples

    to put on an act

    He said, "I'm just curious, is this for real or just an act? / Can't tell if you love or hate me, never met someone like that"

  13. A thesis maintained in public, in some English universities, by a candidate for a degree, or to show the proficiency of a student.

    Usage
    • Countable
    • Uncountable
  14. A regulation (see Usage notes).

    Usage
    • European-Union
    • Countable
    • Uncountable

Verb

  1. To do something.

    Usage
    • Intransitive
    Examples

    If you don’t act soon, you will be in trouble.

  2. To do (something); to perform.

    Usage
    • Obsolete
    • Transitive
    Examples

    that we act our temporal affairs with a deſire no greater than our neceſſity

    Industry doth beget by producing good habits, and facility of acting things expedient for us to do.

    More examples (1)

    Uplifted hands that at convenient times / Could act extortion and the worst of crimes.

  3. To perform a theatrical role.

    Usage
    • Intransitive
    Examples

    I started acting at the age of eleven in my local theatre.

  4. Of a play: to be acted out (well or badly).

    Usage
    • Intransitive
    Examples
    More examples (1)

    But whatever types he assumes, the need to have a good play which acts delightfully well before the audience, and to their delectation, is the dominant thrust. If the play acts well, the director gets the credits.

  5. To behave in a certain manner for an indefinite length of time.

    Usage
    • Intransitive
    Examples

    A dog which acts aggressively is likely to bite.

    I believe that Bill’s stuck-up because of the way that he acts.

    More examples (1)

    He’s acting strangely—I think there’s something wrong with him.

  6. To convey an appearance of being.

    Usage
    • copulative
    Examples

    He acted unconcerned so the others wouldn’t worry.

  7. To do something that causes a change binding on the doer.

    Usage
    • Intransitive
    Examples

    act on behalf of John

  8. To have an effect (on).

    Usage
    • Intransitive
    • construed with on or upon
    Examples

    High-pressure oxygen acts on the central nervous system and may cause convulsions or death.

    Gravitational force acts on heavy bodies.

  9. To play (a role).

    Usage
    • Transitive
    Examples

    He’s been acting Shakespearean leads since he was twelve.

  10. To feign.

    Usage
    • Transitive
    Examples

    He acted the angry parent, but was secretly amused.

    With acted fear the villain thus pursued.

  11. To carry out work as a legal representative in relation to a particular legal matter.

    Usage
    • Intransitive
    Examples

    A lawyer cannot act until they have been formally instructed by their client.

  12. To possess an action onto (some other structure). Examples include the group action of a group on a set, the action of a ring on a module by scalar multiplication, and the action of a group or algebra on a vector space via a representation.

    Usage
    • Intransitive
    • construed with on or upon
    • of an algebraic structure
    Examples

    This group acts on the circle, so it can't be left-orderable!

  13. To move to action; to actuate; to animate.

    Usage
    • Obsolete
    • Transitive
    Examples

    Self-love, the spring of motion, acts the soul.

  14. To enact; to decree.

    Usage
    • Scotland
    • Obsolete
    • Transitive

Noun

  1. a legal document codifying the result of deliberations of a committee or society or legislative body

    Synonyms
  2. something that people do or cause to happen

    Broader terms
  3. a subdivision of a play or opera or ballet

  4. a short performance that is part of a longer program

    Examples

    he did his act three times every evening

    she had a catchy little routine

    More examples (1)

    it was one of the best numbers he ever did

  5. a manifestation of insincerity

    Examples

    he put on quite an act for her benefit

Verb

  1. perform an action, or work out or perform (an action)

    Synonyms
    Antonyms
    Examples

    think before you act

    We must move quickly

    More examples (2)

    The governor should act on the new energy bill

    The nanny acted quickly by grabbing the toddler and covering him with a wet towel

  2. behave in a certain manner; show a certain behavior; conduct or comport oneself

    Broader terms
    Examples

    You should act like an adult

    Don't behave like a fool

    More examples (2)

    What makes her do this way?

    The dog acts ferocious, but he is really afraid of people

  3. play a role or part

    Broader terms
    Examples

    Gielgud played Hamlet

    She wants to act Lady Macbeth, but she is too young for the role

    More examples (1)

    She played the servant to her husband's master

  4. discharge one's duties

    Broader terms
    Examples

    She acts as the chair

    In what capacity are you acting?

  5. pretend to have certain qualities or state of mind

    Synonyms
    Examples

    He acted the idiot

    She plays deaf when the news are bad

  6. be suitable for theatrical performance

    Broader terms
    Examples

    This scene acts well

  7. have an effect or outcome; often the one desired or expected

    Synonyms
    Examples

    The voting process doesn't work as well as people thought

    How does your idea work in practice?

    More examples (3)

    This method doesn't work

    The breaks of my new car act quickly

    The medicine works only if you take it with a lot of water

  8. behave unnaturally or affectedly

    Examples

    She's just acting

  9. perform on a stage or theater

    Broader terms
    Examples

    She acts in this play

    He acted in ‘Julius Caesar’

    More examples (1)

    I played in ‘A Christmas Carol’

Word forms
actsactsactingactedactedactedactestactedactedstactethactedactedacted

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