a. Obs. rare1. [f. tyran, TYRANT + -FUL.] Tyrannical, tyrannous.
1533. Bellenden, Livy, III. xii. (S.T.S.), I. 299. Traisting ay the mair distant and ferrare thay war fra the cumpany of þir ten tyranfull men, to be the ferrare fra every trubil approcheing.