eager, keen

enthusiastic

theoretical (and not thinking about practical problems)

dogmatic, opinionated

put forward as dogmas; (of a person, statement) expressing opinions in an arrogant way

dictatorial, opinionated

frantic

maniacal

(of qualities) high in degree or strength

forceful, severe; passionate

not tolerant

impatient, prejudiced

over the side of a ship or boat into the water

very angry; maniacal

affected with rabies

very angry; maniacal

(of diseases, social evils, physical activity etc) very active and beyond control

uncontrolled, out of hand

a sect or sects

narrow-minded, exclusive

enthusiastic; keen (the usual words)

enthusiastic