Noun

1. Something inferior in quality or condition or effect

Adjective

1. (comparative of `bad') inferior to another in quality or condition or desirability
2. Changed for the worse in health or fitness
3. Having undesirable or negative qualities
4. Feeling or expressing regret or sorrow or a sense of loss over something done or undone

Adverb

1. (comparative of `ill') in a less effective or successful or desirable manner