What is the comparative form of the adjective bad?

The comparative form of the adjective “bad” is “worse” (e.g., “His performance in the second round was worse than in the first”). “Worse” is an irregular comparative adjective that doesn’t follow the usual rules (i.e., it doesn’t end in “-er” or include the words “more” or “less”).

The comparative adjective “worse” is not to be confused with the superlative adjectiveworst” (e.g., “He was the worst player on the team”).