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Webster 1828 Edition

ppr.

Exciting; angering; provoking; causing to contract.

irritating ‎(comparative more irritating, superlative most irritating)

causing irritation, annoyance or pain

Catalan: irritant (ca)
Chinese:
Mandarin: ^{(please verify)}煩 (zh), ^{(please verify)}烦 (zh) ‎(fán), ^{(please verify)}令人討厭 , ^{(please verify)}令人讨厌 ‎(lìngrén tǎoyàn)
Finnish: ärsyttävä (fi), harmittava (fi)

Stimulates or exciting a response

irritating