Is the word weren't a verb or pronoun?

Answer 1

The word weren't is a contraction,a short form for the verb 'were' and the adverb 'not'.

The contraction were'n't functions as a verb or an auxiliary verb in a sentence.

Examples:
We were not expecting company.

Or: We weren't expecting company.

Answer 2

"Weren't" is a contraction of "were not," where "were" is a verb and "not" is an adverb. So "weren't" is not a verb or pronoun on its own but rather a combination of a verb and an adverb.