English
irritator
From irritate + -or.
Formed from irritate + -or
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
noun One who or that which irritates.
Language periods are conventional ranges, not dates for this word.
Etymograph / irritator