\Tyr"an*nize\, v. i. [imp. & p. p. {Tyrannized}; p.
pr. & vb. n. {Tyrannizing}.] [Cf. F. tyranniser, Gr. ? to
take the part of tyrants.]
To act the tyrant; to exercise arbitrary power; to rule with
unjust and oppressive severity; to exercise power others not
permitted by law or required by justice, or with a severity
not necessary to the ends of justice and government; as, a
prince will often tyrannize over his subjects; masters
sometimes tyrannize over their servants or apprentices.

\Tyr"an*nize\, v. t.
To subject to arbitrary, oppressive, or tyrannical treatment;
to oppress.