ultra

Immoderately adhering to a belief, fashion, or course of action; extreme.

An extremist.

Extreme; extravagant; fanatical: as, ultra measures.

One who advocates extreme views or measures; an extremist; an ultraist.

A Latin preposition used as a prefix, signifying ‘beyond.’

Going beyond others, or beyond due limit; extreme; fanatical; uncompromising; ; ultra measures.

One who advocates extreme measures; an ultraist; an extremist; a radical.

Extreme; far beyond the norm.

An ultra-royalist in France.

An extremist.