21 possible answers to
Answers with 3 characters: DUD Answers with 4 characters: BASE IDLE NULL SLIM VAIN VILE Answers with 5 characters: SORRY STRAW Answers with 6 characters: NOGOOD OTIOSE CRUMMY DROSSY TRASHY Answers with 7 characters: BLUESKY NOCOUNT INUTILE OFNOUSE Answers with 8 characters: RUBBISHY UNUSABLE Answers with 11 characters: FORTHEBIRDS