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Wiktionary
chummier

a. (en-comparative of: chummy)

WordNet
chummier

See chummy

chummy
  1. adj. (used colloquially) having the relationship of friends or pals [syn: matey, pally, palsy-walsy]

  2. (used informally) associated on close terms; "a close friend"; "the bartender was chummy with the regular customers"; "the two were thick as thieves for months" [syn: buddy-buddy, thick(p)]

  3. [also: chummiest, chummier]

Usage examples of "chummier".

My morose mood is exacerbated by the fact that the four members of Clueless Crew are even chummier than usual.