Synonyms for bad

adverb

• with great intensity (`bad' is a nonstandard variant for `badly')
• very much; strongly

noun

• that which is below standard or expectations as of ethics or decency

adjective

• very intense
• not capable of being collected
• reproduced fraudulently
• physically unsound or diseased
• not working properly
• feeling or expressing regret or sorrow or a sense of loss over something done or undone
• not financially safe or secure
• feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad')
• (of foodstuffs) not in an edible or usable condition
• below average in quality or performance
• capable of harming
• characterized by wickedness or immorality
• having undesirable or negative qualities
• nonstandard