Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
irritably is an adverb meaning "in a petulant manner". It carries 2 recorded senses.
in an irritable manner
“she had become irritably exact”
Definitions, synonyms and semantic relations for irritably come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.