- 1[transitive, intransitive] to give or receive a sudden, sharp, painful knock jar something The jolt seemed to jar every bone in her body. jar (something) (on something) The spade jarred on something metal.
- 2[intransitive, transitive] jar (on something) jar (something) to have an unpleasant or annoying effect synonym grate His constant complaining was beginning to jar on her nerves. There was a jarring note of triumph in his voice.
- 3[intransitive] jar (with something) to be different from something in a strange or unpleasant way synonym clash Her brown shoes jarred with the rest of the outfit. The only jarring note was the cheap modern furniture.
NAmE//dʒɑr//Verb Forms present simple I / you / we / they jar
he / she / it jars
past simple jarred
-ing form jarring