before a vowel tyrann-, repr. Gr. τυραννο-, combining form of τύραννος TYRANT, occurs in a few nonce-formations, as Tyrannoctonic a. [Gr. τυραννοκτόνος killer of a tyrant], tyrant-slaying; Tyrannophobia [-PHOBIA], dread of tyrants.
1651. Hobbes, Leviath., II. xxix. 171. A certain Tyrannophobia, or feare of being strongly governed.
1789. Parr, Lett. to Burney, Wks. 1828, VII. 411. What say you to this tyranno[c]tonic rigour which has overtaken Joseph and Gustavus?