ill - noun

an often persistent bodily disorder or disease; a cause for complaining

ill - adjective

• affected by an impairment of normal physical or mental function
• resulting in suffering or adversity
• distressing
• indicating hostility or enmity
• presaging ill fortune

ill - adverb

• (`ill' is often used as a combining form) in a poor or improper or unsatisfactory manner; not well
• unfavorably or with disapproval
• with difficulty or inconvenience; scarcely or hardly

ill - thesaurus

ailment   badly   complaint   inauspicious   ominous   poorly   sick