i-adjective
quarrelsome; quick-tempered; easily angered
Describes a person who is prone to starting fights or arguments, often over small things. Colloquial and somewhat informal.
See also: 喧嘩早い
彼は喧嘩っ早いから、すぐに言い争いになる。
He's quick-tempered, so he gets into arguments right away.
あの人は喧嘩っ早くて、ちょっとしたことで怒る。
That person is quarrelsome and gets angry over little things.