1
2
as in show
a display of emotion or behavior that is insincere or intended to deceive
was putting on an act when she said she didn't mind being left out of the outing
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in law
a rule of conduct or action laid down by a governing authority and especially a legislature
the Americans with Disabilities Act requires public buildings to have wheelchair access
Synonyms & Similar Words
4
as in thing
something done by someone
it's acts such as this—lying about having to work late—that make me feel like I can't trust you
Synonyms & Similar Words
1
as in to play
to present a portrayal or performance of
a local student acted the part of Tiny Tim in our theater company's production of A Christmas Carol
Synonyms & Similar Words
2
3
4
5
as in to pretend
to present a false appearance of
if you act confident long enough, you'll begin to actually feel it
Synonyms & Similar Words
6
as in to mock
to pretend to be (what one is not) in appearance or behavior
someone who is willing to act the helpless little thing when she wants attention
Synonyms & Similar Words
Cite this Entry
“Act.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/act. Accessed 7 Sep. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
