Ill1. (a.) Contrary to good, in a physical sense; contrary or opposed to advantage, happiness, etc.; bad; evil; unfortunate; disagreeable; unfavorable.
2. (a.) Contrary to good, in a moral sense; evil; wicked; wrong; iniquitous; naughty; bad; improper.
3. (a.) Sick; indisposed; unwell; diseased; disordered; as, ill of a fever.
4. (a.) Not according with rule, fitness, or propriety; incorrect; rude; unpolished; inelegant.
5. (n.) Whatever annoys or impairs happiness, or prevents success; evil of any kind; misfortune; calamity; disease; pain; as, the ills of humanity.
6. (n.) Whatever is contrary to good, in a moral sense; wickedness; depravity; iniquity; wrong; evil.
7. (adv.) In a ill manner; badly; weakly.
Thesaurus Entries
abomination, affection, ailing, ailment, amiss, apocalyptic, atrocity, bad, badly, baleful, bane, baneful, befoulment, below par, black, blight, bodeful, boding, complaint, condition, corruption, criminal, critically ill, crying evil, damage, damaging, dark, defilement, deleterious, despoliation, destruction, detriment, detrimental, dire, disadvantageously, disagreeable, disagreeably, discourteous, disease, disorder, disrespectful, doomful, down, dreary, evil, evil-starred, evilly, faint, faintish, fateful, feeling awful, feeling faint, feeling something terrible, foreboding, gloomy, grievance, harm, havoc, hurt, hurtful, ill-boding, ill-bred, ill-fated, ill-mannered, ill-omened, ill-starred, impertinent, impolite, improper, in danger, inaccurate, inauspicious, incline, inconveniently, indisposed, inexpedient, infection, inferior, infirmity, inhospitable, inhospitably, inimical, injurious, injury, invalid, laid low, lowering, malady, malevolent, menacing, mischief, mortally ill, not quite right, of evil portent, off-color, ominous, out of sorts, outrage, peccant, poison, pollution, portending, portentous, rocky, rude, seedy, sick, sick unto death, sickish, sickness, sinful, sinister, somber, syndrome, taken ill, the worst, threatening, toxin, unadvantageously, unaffectionate, unaffectionately, unamiable, unamiably, unbenign, unbenignant, unbenignantly, unbenignly, uncompassionate, uncompassionately, uncompassioned, uncordial, uncordially, under the weather, unfavorable, unfortunate, unfriendly, ungenial, ungenially, ungracious, ungraciously, unhandily, unhealthy, unkind, unkindly, unloving, unlovingly, unlucky, unpleasant, unprofitably, unpromising, unpropitious, unrewardingly, unskillful, unsympathetic, unsympathetically, unsympathizing, untoward, unwell, uselessly, venom, vexation, vicious, wicked, with difficulty, woe, wrong, wrongly