The word bad is an adjective and should be used to modify nouns and pronouns. Badly, like most words ending in -ly, is an adverb and is used to modify verbs. ... So it would be appropriate to use an adverb ending in -ly to describe how she has done . . . and unfortunately for Amanda, it is badly. She did badly on the test.

Is bad an adverb or adjective?

Bad is an adjective used with linking verbs such as feel, seem, be, look, etc. Incorrect: I feel badly that he is not taking part in the game. Correct: I feel bad that he is not taking part in the game. Badly is an adverb used to modify action verbs.

Is bad noun or adjective?

As detailed above, 'bad' can be a noun, an adverb, a verb or an adjective. Noun usage: Sorry, my bad! Adverb usage: I didn't do too bad in the last exam. Adjective usage: You have bad credit.