irritating vs irritative

irritating and irritative both are adjectives.

Word	Noun	Adjective	Verb	Adverb
irritating	No	Yes	No	No
irritative	No	Yes	No	No

As adjectives, irritating and irritative are synonyms defined as:

irritating and irritative: (used of physical stimuli) serving to stimulate or excite

irritating (adjective)	irritative (adjective)
causing irritation or annoyance	(used of physical stimuli) serving to stimulate or excite
(used of physical stimuli) serving to stimulate or excite
causing physical discomfort