adjective worse, worst

1. characterized by, causing, or tending to cause harm or evil; specif.,
   1. morally bad or wrong; evil ill repute
   2. causing pain, hardship, etc.; adverse ill fortune
   3. not kind or friendly; harsh; cruel ill will
   4. promising trouble; unfavorable; unfortunate; unpropitious an ill omen
2. not healthy, normal, or well; having a disease; sick; indisposed
3. not according to rule, custom, desirability, etc.; faulty; imperfect ill breeding

Etymology: ME < ON illr (replacing OE yfel, evil, in many senses): prob. < Gmc *ilhila < IE base *elk-, hungry, bad > OIr elc, bad

noun

adverb worse, worst

1. in an ill manner; specif.,
   1. badly; wrongly; improperly; imperfectly ill-gotten gains
   2. harshly; cruelly; unkindly ill-spoken
2. with difficulty; scarcely they can ill afford to refuse

1. illustrated
2. illustration
3. illustrator