Synonyms for Rotten:

adj.

bad (adjective)
unpleasant.
brittle (adjective)
crumbly.
cheap (adjective)
shoddy.
damaged (adjective)
spoiled.
decayed, decaying (adjective)
gross, unsound, spoiled, bad, decomposed, crumbled, corrupt, decomposing, moldy, putrid, putrescent, sour, stinking, mephitic, rotting, overripe, festering, polluted, putrified, stale, disgusting, rank, strong, tainted, rancid, moldering, Disintegrated, loathsome, Crumbling, offensive.
despicable (adjective)
shabby.
despicable, inferior, bad (adjective)
vile, crummy, diseased, impaired, disagreeable, contemptible, injured, base, mean, bruised, lousy, poor, wasted, wicked, shaky, unsatisfactory, withering, unpleasant, nasty, defective.
disagreeable (adjective)
objectionable.
dishonest (adjective)
corrupt.
dishonest, immoral (adjective)
degenerate, flagitious, villainous, depraved, perverse, nefarious, crooked.
disintegrated (adjective)
dilapidated, spoiled, putrefied, broken, Anatomized, festering, shattered, turned, decayed, dissected, mortified, crumbled, Disintegrated, Degenerated, gangrenous, decomposed, molten, dissolved.
fetid (adjective)
mephitic, stinky, fusty.
lousy (adjective)
crummy.
musty (adjective)
moldy.
offensive (adjective)
embarrassing, offensive.
unclean (adjective)
putrescent.
unhealthy (adjective)
diseased.
wicked (adjective)
wicked, amoral.

n.

diseased, tottering, sound, amoral, weak, injured, strong, wasted, defective, gross, sordid, crumbly, Crumbling, withering, perverted, deviant, shaky, impaired. hard, unsatisfactory, unappealing, disagreeable, unpleasant, objectionable, bleak, poor, unattractive. fusty, musty, for crying out loud, brother, for heaven's sake/sakes, what's the big idea?, frowzy, give me strength, moldy, what's that supposed to mean?, darn, give me a break, for pity's sake. flaky, taste, worm-eaten, flyblown, buggy, wormy, bruised, better, thrive, verminous. despicable, repugnant, obnoxious, abhorrent, vile, low, odious, shabby, antipathetic, detestable, nefarious, abominable, Despisable, wretched, mean, contemptible, nasty, infamous. crummy, paltry, trashy, miserable, cheesy, schlocky, cheap, base, shoddy, sleazy. rotten (noun)
moldering, moldered, tainted, rotting, lousy, corrupt, stinking, unsound, mouldered, decayed, putrid, icky, mouldering, decomposed, decomposing, putrefied, stinky, putrescent, putrified, rotted, bad.

v.

revolting (verb)
offensive.

Other synonyms:

fusty, wicked, Despisable, rancid, flagitious, schlocky, crummy, cheesy, worm-eaten, wormy. loathsome, frowzy, villainous, trashy, dishonest, abominable, verminous, weak, miscreant, contemptible, rank, detestable, nefarious, depraved, despicable, obnoxious, vile, odious, repugnant, shoddy, abhorrent. flaky, paltry, sleazy, infamous, disgusting, wretched, buggy, antipathetic, perverse, shabby. miserable, unhealthy, degenerate. cheap. low. poor. nasty. musty
moldy.
rotting
rotting, Decaying, overripe.
spoiled
musty.
vicious
mean.

Usage examples for rotten

  1. Growing on and inside of rotten wood. – The Myxomycetes of the Miami Valley, Ohio by A. P. Morgan
  2. It's a rotten life for a child like you. – Jeanne of the Marshes by E. Phillips Oppenheim
  3. It seems a rotten time to bring this matter up just when we are going on to the ground, but I never really thought much about it till that little lady put it to me as I told you. – The Major by Ralph Connor