- toothless - lacking teeth; "most birds are toothless"; "a toothless old crone"
Antonyms: toothed, buck-toothed, cogged, fine-toothed, fine-tooth, gap-toothed, toothy, saber-toothed, sabertoothed, sabre-toothed, toothlike
- toothless - lacking necessary force for effectiveness; "a toothless piece of legislation"
Antonyms: effective, effectual, efficacious (indirect, via ineffective)