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We found 30 dictionaries with English definitions that include the word counteract: Click on the first link on a line below to go directly to a page where "counteract" is defined. General (27 matching dictionaries) counteract: American Heritage Dictionary of the English Language [home, info] counteract: Collins English Dictionary [home, info] counteract: Vocabulary.com [home, info] counteract: Macmillan Dictionary [home, info] counteract: Merriam-Webster's Online Dictionary, 11th Edition [home, info] Counteract, counteract: Wordnik [home, info] counteract: Cambridge Advanced Learner's Dictionary [home, info] counteract: Wiktionary [home, info] counteract: Webster's New World College Dictionary, 4th Ed. [home, info] counteract: The Wordsmyth English Dictionary-Thesaurus [home, info] counteract: Infoplease Dictionary [home, info] counteract: Dictionary.com [home, info] counteract: Online Etymology Dictionary [home, info] counteract: UltraLingua English Dictionary [home, info] counteract: Cambridge Dictionary of American English [home, info] Counteract: Online Plain Text English Dictionary [home, info] counteract: Webster's Revised Unabridged, 1913 Edition [home, info] counteract: Rhymezone [home, info] Counteract: AllWords.com Multi-Lingual Dictionary [home, info] counteract: Webster's 1828 Dictionary [home, info] counteract: Free Dictionary [home, info] counteract: Mnemonic Dictionary [home, info] counteract: WordNet 1.7 Vocabulary Helper [home, info] counteract: LookWAYup Translating Dictionary/Thesaurus [home, info] counteract: Dictionary/thesaurus [home, info] Business (1 matching dictionary) counteract: Legal dictionary [home, info] Computing (1 matching dictionary) counteract: Encyclopedia [home, info] Medicine (1 matching dictionary) counteract: Medical dictionary [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (counteract) ▸ verb:  oppose and mitigate the effects of by contrary actions ("This will counteract the foolish actions of my colleagues") ▸ verb:  oppose or check by a counteraction ▸ verb:  act in opposition to ▸ verb:  destroy property or hinder normal operations ▸ Word origin