'Stickler' definitions:

Definition of 'stickler'

From: WordNet
noun
Someone who insists on something; "a stickler for promptness"

Definition of 'Stickler'

From: GCIDE
  • Stickler \Stic"kler\ (st[i^]k"kl[~e]r), n. [See Stickle, v. t.] One who stickles. Specifically: [1913 Webster] (a) One who arbitrates a duel; a sidesman to a fencer; a second; an umpire. [Obs.] [1913 Webster]
  • Basilius, the judge, appointed sticklers and trumpets whom the others should obey. --Sir P. Sidney. [1913 Webster]
  • Our former chiefs, like sticklers of the war, First sought to inflame the parties, then to poise. --Dryden. [1913 Webster] (b) One who pertinaciously contends for some trifling things, as a point of etiquette; an unreasonable, obstinate contender; as, a stickler for ceremony. [1913 Webster]
  • The Tory or High-church were the greatest sticklers against the exorbitant proceedings of King James II. --Swift. [1913 Webster]

Synonyms of 'stickler'

From: Moby Thesaurus