Similar word to badder:

abominable, amiss, atrocious, awful, bad news, beastly, blah, bottom out, bummer, careless, cheap, cheesy, crappy, cruddy, crummy, defective, deficient, diddly, dissatisfactory, downer, dreadful, erroneous, fallacious, faulty, garbage, godawful, grody, gross, grungy, icky, imperfect, inadequate, incorrect, inferior, junky, lousy, not good, off, poor, raunchy, rough, sad, slipshod, stinking, substandard, synthetic, the pits, unacceptable, unsatisfactory