ir·ri·tant 
(ĭrĭ-tənt)
(ĭrĭ-tənt)adj.
Causing irritation, especially physical irritation.
n.
A source of irritation: tobacco smoke, a common eye irritant.
[French, from Latin irrītāns, irrītant-, present participle of irrītāre, to irritate.]
- abstinent
- abstinently
- abstract
- abstracted
- abstractedly
- abstractedness
- abstracter
- abstract expressionism
- abstraction
- abstractional
- abstractionism
- abstractionist
- abstractive
- abstractly
- abstractness
- abstract of title
- abstruse
- abstrusely
- abstruseness
- absurd
- absurdism
- absurdist
- absurdity
- absurdly
- absurdness