Antonyms of conformist:
nonconformist, recusant, unconformist, unorthodox.
Examples of usage:
  1. Was silenced for a non- conformist poet; Now, sirs, since common sence has won the day, Be kind to this as to his last year's play; His friends stood firmly to him, when distressed, He hopes the number is not now decreast.
    "The Works Of John Dryden, Vol. 7 (of 18) The Duke of Guise; Albion and Albanius; Don Sebastian", John Dryden.
  2. We are not entitled to charge Herr Stedefeld's thesis to the account of religious bias, seeing that Mr. Feis in his turn writes from the standpoint of a kind of Protestant freethinker, who sees in Shakspere a champion of free inquiry against the Catholic conformist policy of Montaigne; while strictly orthodox Christians have found in Hamlet's various allusions to deity, and in his " as for me, I will go pray," a proof alike of his and of Shakspere's steadfast piety.
    "Montaigne and Shakspere", John M. Robertson.
  3. With her on Sundays Browning listened at Bedford Chapel to the sermons of a non- conformist preacher, Thomas Jones, to some of which when published in 1884, he prefixed an introduction.
    "Robert Browning", Edward Dowden.