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Definitions

acting

[ak-ting] / ˈæk tɪŋ /
ADJECTIVE
substituting in a role
Synonyms
STRONG
adjutant alternate assistant delegated deputy interim surrogate temporary
WEAK
ad interim pro tem pro tempore provisional
Antonyms
WEAK
permanent
NOUN
entertaining, performing
Synonyms
STRONG
assuming characterization depiction dramatics dramatizing enacting enactment feigning hamming histrionics imitating imitation impersonation improvisation mime mimicry pantomime performance playing portrayal portraying posing posturing pretending pretense putting rendition seeming simulating stagecraft stooging theatre theatricals
WEAK
play acting showing off

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

David Janovsky has worked on federal transparency issues for decades and is acting director of the Constitution Project at the Project on Government Oversight.

From Slate • Apr. 9, 2026

At the time, Bondi said the department was acting “at the request” of the Pentagon.

From Salon • Apr. 8, 2026

“Today’s D.C. Circuit stay allowing the government to designate Anthropic as a supply chain risk is a resounding victory for military readiness,” said Todd Blanche, the acting attorney general.

From The Wall Street Journal • Apr. 8, 2026

The popular medicines remove feelings of hunger by acting like a natural gut hormone that makes users feel full.

From BBC • Apr. 8, 2026

For a moment, Jonah was afraid that she wasn’t going to react—why was she acting so freaky?

From "Found" by Margaret Peterson Haddix