icky, crappy, lousy, rotten, shitty, stinking, stinky (adj)

very bad

"a lousy play"; "it's a stinking world"

decayed, rotten, rotted (adj)

damaged by decay; hence unsound and useless

"rotten floor boards"; "rotted beams"; "a decayed foundation"

rotten (adj)

having decayed or disintegrated; usually implies foulness

"dead and rotten in his grave"

rotten (Adverb)

To an extreme degree.

rotten (Adjective)

Of perishable items, overridden with bacteria and other infectious agents.

rotten (Adjective)

In a state of decay.

rotten (Adjective)

Cruel, mean or immoral.

rotten (Adjective)

Bad or terrible.