Definition of Act up

1. Verb. Misbehave badly; act in a silly or improper way. "The children acted up when they were not bored"

Exact synonyms: Carry On
Generic synonyms: Misbehave, Misconduct, Misdemean

2. Verb. Make itself felt as a recurring pain. "My arthritis is acting up again"
Generic synonyms: Ache, Hurt, Smart

Definition of Act up

1. Verb. (intransitive idiomatic) To misbehave; to cause trouble. ¹

¹ Source:

Act Up Pictures

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Lexicographical Neighbors of Act Up

act a fool
act as
act involuntarily
act of Congress
act of God
act of independent significance
act of terrorism
act on
act one's age
act out
act reflexively
act superior
act up (current term)
act upon
acte clair
acte gratuit
acted out
acted up

Literary usage of Act up

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Revolutionary Diplomatic Correspondence of the United States by United States Dept. of State, Francis Wharton, John Bassett Moore (1889)
"Whether I shall have sufficient courage and perseverance to act up to that character, and whether my small abilities, supported by application and ..."

2. The Life of William Wilberforce by Robert Isaac Wilberforce, Samuel Wilberforce (1838)
"Have you received any more intimations from high places, about the disposition to act up to.your hints? I greatly rejoice in your having written that book, ..."

3. Reports of Cases Argued and Determined in the High Court of Chancery During by Great Britain Court of Chancery, James William Mylne, Richard Davis Craig, Charles Christopher Pepys Cottenham (1839)
"... great disgrace to him, and who wishes only to be consistent in endeavour- ing to be right, though he cannot act up to it without admitting he is wrong. ..."

4. A Portion of the Journal Kept by Thomas Raikes, Esq., from 1831 to 1847 by Thomas Raikes (1856)
"... they are therefore ruled by the press in their language, and they advocate liberal opinions without having the courage to act up to them. ..."

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