Synonyms For "Bad" :

1 syllable:

big, corked, forged, hard, ill, sad, spoiled, spoilt, stale, tough, worse, worst

2 syllables:

awful, badly, badness, corky, crappy, dreadful, evil, fearful, frightful, hopeless, horrid, icky, intense, lousy, naughty, painful, pretty, risky, rotten, rubber, severe, shitty, sorry, stinking, stinky, swingeing, uncool, unfit, unskilled, unsound

3 syllables:

atrocious, defective, distressing, negative, pitiful, regretful, terrible

4 syllables:

deplorable, incompetent, lamentable, mediocre, speculative, unspeakable, unsuitable

5 syllables:

abominable, disobedient, uncollectible, uncomfortable, unfavorable, unfavourable