'Tyrannous' definitions:

Definition of 'tyrannous'

(from WordNet)
adjective
Marked by unjust severity or arbitrary behavior; "the oppressive government"; "oppressive laws"; "a tyrannical parent"; "tyrannous disregard of human rights" [syn: oppressive, tyrannical, tyrannous]

Definition of 'Tyrannous'

From: GCIDE
  • Tyrannous \Tyr"an*nous\ (t[i^]r"an*n[u^]s), a. Tyrannical; arbitrary; unjustly severe; despotic. --Sir P. Sidney. -- {Tyr"an*nous*ly}, adv. [1913 Webster]