What part of speech is the word opposite?

The Word 'opposite' is a noun, an adjective, an adverb, and a preposition.
The noun 'opposite' is a singular, common, abstract noun; a Word for someone or something that is completely different from someone or something else; a Word for a concept; a Word for a thing.

The noun form of the adjective 'opposite' is oppositeness.

A related noun form is opposition.

Examples for the Word 'opposite':
He believes that the plan will work, but I believe the opposite. (noun)
He fled in the opposite direction when he saw the police car. (adjective)
They live opposite to the post office on Elm Street. (adverb)
She took the position opposite Sam in the debate. (preposition)