Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Thesaurus

act up

verb

Synonyms and Antonyms of act up

  1. 1 to behave badly <the two-year-old was acting up in church so much that her dad had to take her outside> Synonyms act out, misbehave, carry onRelated Words misconduct; disobey, rebel; clown (around), cut up, fool around, horse around, kid (around); show off; roughhouseNear Antonyms obey; acquit, act, bear, comport, conduct, demean, deport, quit; comply, conform; check, collect, compose, constrain, contain, control, curb, handle, inhibit, move, quiet, repress, restrain

  2. 2 to engage in attention-getting playful or boisterous behavior <you should have seen the boys acting up when they put on their aprons> Synonyms cut up, clown (around), fool around, horse around, hotdog, monkey (around), showboat, show off, skylarkRelated Words carry on, misbehave; roughhouse; caper, cavort, disport, frisk, frolic, gambol, lark, rollick, romp; carouse, maffick, revel, roar, wassail




Learn More about act up


Seen and Heard

What made you want to look up act up? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 10, 2016

to put in good humor

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

duvet kittly-benders spindrift pince-nez
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ