abominability, baseness, beastliness, commonness, commonplaceness, contemptibility, contrariety, crudeness, degradation, demotion, depluming, despicability, despicableness, disgustingness, displuming, foulness, fulsomeness, grossness, harshness, hatefulness, heinousness, homeliness, ignominiousness, ignominy, infamousness, infamy, ingloriousness, loathsomeness, loss of honor, lowness, meanness, nastiness, nauseousness, noisomeness, noxiousness, objectionability, objectionableness, obloquy, obnoxiousness, obscenity, odiousness, odium, offensiveness, opprobrium, ordinariness, plebeianism, putridity, putridness, rebarbativeness, repellence, repellency, repugnance, repulsiveness, rottenness, unspeakableness, vileness

For further exploring for "ignobility" in Webster Dictionary Online