'On purpose' definitions:

Definition of 'on purpose'

From: WordNet
adverb
With intention; in an intentional manner; "he used that word intentionally"; "I did this by choice" [syn: intentionally, deliberately, designedly, on purpose, purposely, advisedly, by choice, by design] [ant: accidentally, by chance, circumstantially, unexpectedly, unintentionally]

Definition of 'On purpose'

From: GCIDE
  • Purpose \Pur"pose\, n. [OF. purpos, pourpos, propos, L. propositum. See Propound.]
  • 1. That which a person sets before himself as an object to be reached or accomplished; the end or aim to which the view is directed in any plan, measure, or exertion; view; aim; design; intention; plan. [1913 Webster]
  • He will his firste purpos modify. --Chaucer. [1913 Webster]
  • As my eternal purpose hath decreed. -- Milton. [1913 Webster]
  • The flighty purpose never is o'ertook Unless the deed go with it. --Shak. [1913 Webster]
  • 2. Proposal to another; discourse. [Obs.] --Spenser. [1913 Webster]
  • 3. Instance; example. [Obs.] --L'Estrange. [1913 Webster]
  • In purpose, Of purpose, On purpose, with previous design; with the mind directed to that object; intentionally. On purpose is the form now generally used. [1913 Webster]
  • Syn: design; end; intention; aim. See Design. [1913 Webster]

Synonyms of 'on purpose'

From: Moby Thesaurus