| 单词 | act up |
| 释义 | act upSEE SYNONYMS FOR act up ON THESAURUS.COM verb(intr, adverb) informal to behave in a troublesome waythe engine began to act up when we were miles from anywhere Words nearby act upactuals, actual sin, actuary, actuate, actuator, act up, act upon, actus reus, act warning, acuate, Acuff Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Idioms and Phrases with act upact up Misbehave. For example, With an inexperienced rider, this horse always acts up. [c. 1900] Malfunction, as in I'm not sure what's wrong with my car, but the transmission is acting up. In both usages up means “abnormally.” The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. |
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