Superlative form meaning most cliquey or displaying the greatest degree of clique behavior.
From 'cliquey' + '-est' (superlative suffix). The standard superlative form of 'cliquey,' preferred over 'cliqueiest.'
The '-y' ending naturally takes '-ier/-iest' for comparatives and superlatives (happy → happier → happiest), so 'cliquiest' feels more natural than 'cliqueiest' to most speakers.
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