If you describe something as an irritant, you mean that it keeps annoying you.
例句
He said the issue was not a major irritant.他說那個問題不是什么大問題。
N-COUNT
(令身體部位發癢或疼痛的)刺激物
An irritant is a substance which causes a part of your body to itch or become sore.
例句
Many pesticides are irritants.很多殺蟲劑都具有刺激性。
英漢詞典釋義
adj.
有刺激性的
irritant gas<軍>刺激性毒氣
使無效的, 使失效的
anirritant clause規定在一定條件下無效的條款
n.
刺激物，刺激因素
Moreover,senior citizen discount is a direct irritant in what some politicians and scholars see as a coming conflict beteeen generations此外，在一些政治家和學者看來，老年公民折扣是上一代和下一代之間矛盾的直接刺激
英英詞典釋義
Noun
1. something that causes irritation and annoyance;