Boisterously or violently uncontrollable.
Early 19th century from rampage + -ous.
“He destroyed everything in a rampageous fit”
Aginer (noun) (US informal)
A person who is against something; one who opposes a proposal, course of action, point of view, etc. Also more generally: a person having a habitually negative attitude; one who opposes any change as a matter of principle.
Early 20th century; earliest use found in Westminster (Philadelphia). From agin, regional and colloquial variant of again + -er.