autocratic adj.

"absolute sovereign; ruler or monarch who holds power of government as by right, not subject to restrictions," 1800, in reference to the Russian tsars, who assumed it as a title, then to Napoleon, from French autocrate, from Latinized form of Greek autokratēs "ruling by oneself, absolute, autocratic," from autos "self" (see auto-) + kratia "rule," from kratos "strength, power" (see -cracy). The Greek noun was autokrator, and an earlier form in English was autocrator (1759). The earliest forms in English were the fem. autocratress (1762), autocratrix (1762), autocratrice (1767, from French).