adjective
not used before a noun
[more ~; most ~] informal
crazy
very enthusiastic about or interested in something - often + about
feeling affection or love for someone or something - often + for or about
go nuts
to become mentally ill :to become insane
to act in a way that is wild or out of control because of strong emotion
interjection
US informal + old-fashioned - used to express anger, disappointment, etc.
US