Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
clamorous is an adjective meaning "conspicuously and offensively loud; given to vehement outcry". It carries one recorded sense.
conspicuously and offensively loud; given to vehement outcry
“blatant radios”
“a clamorous uproar”
“strident demands”
“a vociferous mob”
Definitions, synonyms and semantic relations for clamorous come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.