Similar words: irritate, irritable, irritably, irritated, irritating, irritation, irritability, irritatingly. Meaning: ['ɪrɪtənt] 
n. something that causes irritation and annoyance.
n. something that causes irritation and annoyance. 61. Irritant to nose and throat. Avoid breathing dust and fumes.
More similar words: irritate, irritable, irritably, irritated, irritating, irritation, irritability, irritatingly, puritan, samaritan, inheritance, puritanical, hesitant, militant, inheritance tax, good samaritan, hesitantly, concomitant, inhabitant, exorbitant, exorbitantly, instantaneous, shirring, irrigate, stirring, instantaneously, irrigation, burrito, irregularity, territory.