English
irritatory
From irritate + -ory.
Formed from irritate + -ory
Proto-Indo-European *h₃er- ‘to move, to stir’
Proto-Indo-European *h₃reyH- ‘to churn’
Proto-Indo-European *h₃riH-tó-s ‘whirled, stirred’
Latin irrītō ‘excite, irritate, incite, stimulate’
Latin irrītātus
English irritate
Today it means
adj Producing irritation.
Language periods are conventional ranges, not dates for this word.
Etymograph / irritatory