Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
rackety is an adjective meaning "uncontrollably noisy". It carries one recorded sense.
uncontrollably noisy
Definitions, synonyms and semantic relations for rackety come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.