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v. clashed, clash·ing, clash·es
1. To collide with a loud, harsh, usually metallic noise: cymbals clashing.
a. To meet in violent conflict: armies that clashed on the plain.
b. To be in opposition or disagreement: an eyewitness account that clashed with published reports.
3. To create an unpleasant visual impression when placed together: colors that clash.
To strike together with a loud, harsh, metallic noise.
1. A loud, harsh noise, such as that made by two metal objects in collision.
a. A violent conflict or confrontation.
b. A disagreement or state of opposition: a clash of political ideologies. See Synonyms at conflict.
3. An incongruity or unpleasant juxtaposition of different colors or elements.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.clashing - sharply and harshly discordant; "clashing interests of loggers and conservationists"; "clashing colors"
incompatible - not compatible; "incompatible personalities"; "incompatible colors"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in classic literature ?
In the procession I should feel the crushing feet, the clashing discords, the ruthless hands and stifling breath.
402-412) As two lions (6) on either side of a slain deer spring at one another in fury, and there is a fearful snarling and a clashing also of teeth -- like vultures with crooked talons and hooked beak that fight and scream aloud on a high rock over a mountain goat or fat wild-deer which some active man has shot with an arrow from the string, and himself has wandered away elsewhere, not knowing the place; but they quickly mark it and vehemently do keen battle about it -- like these they two rushed upon one another with a shout.
No, that is probably not true; one thinks he would not look if he knew what was coming, but the interest and the excitement are so powerful that they would doubtless conquer all other feelings; and so, under the fierce exhilaration of the clashing steel, he would yield and look after all.