I. verb
1.
Synonyms: bump 1, collide, ||prang
2.
to be markedly out of harmony
garish colors that clashed almost painfully
Synonyms: conflict, disaccord, discord, disharmonize, jangle, jar, mismatch
Related Word: fret, gall, grate, try
Idioms: swear at one another
Contrasted words: accord, blend, conform, correspond; fit, meet, suit
Antonyms: harmonize
II. noun
1.
Synonyms: impact 1, bump, collision, concussion, crash, jar, jolt, shock, smash, wallop
2.
a sharp and usually brief conflict especially between military units
recurrent border clashes
Synonyms: affray, brush, fray, melee, mellay, scrimmage, skirmish
Related Word: brawl, broil, fracas, riot, row, rumpus, scrap, set-to; action, battle, conflict, engagement; embroilment, encounter
Idioms: clash of arms, passage at ( or of) arms