Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
cliquishly is an adverb meaning "in a clannish manner". It carries one recorded sense.
in a clannish manner
“these four friends always act clannishly, and don't let us participate in their activities”
Definitions, synonyms and semantic relations for cliquishly come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .