ill (Noun) — An often persistent bodily disorder or disease; a cause for complaining.
ill (Noun) — A source of difficulty.
ill (Noun) — That which causes harm, destruction or misfortune.
ill (Adjective) — Affected by an impairment of normal physical or mental function. ex. "ill from the monotony of his suffering"
ill (Adjective) — Resulting in suffering or adversity. ex. "ill effects" ex. "it's an ill wind that blows no good"
ill (Adjective) — Distressing. ex. "ill manners" ex. "of ill repute"
ill (Adjective) — Indicating hostility or enmity. ex. "you certainly did me an ill turn" ex. "ill feelings" ex. "ill will"
ill (Adjective) — Presaging ill fortune. ex. "ill omens" ex. "ill predictions"
ill (Adverb) — In a poor or unsatisfactory manner; not well. ex. "he was ill prepared" ex. "it ill befits a man to betray old friends" ex. "ill-fitting clothes" ex. "an ill-conceived plan"
ill (Adverb) — Unfavourably or with disapproval. ex. "tried not to speak ill of the dead"
ill (Adverb) — With difficulty or inconvenience; scarcely or hardly. ex. "we can ill afford to buy a new car just now"
ill (Other) — I shall; I will.