Unscramble Letters Vowel Swap Plurals ScrambleOnline version Unscramble singulars whose plurals swap vowels. by Arnab Biswas 1 An adult male human. M N A 2 An adult female human. N A W M O 3 A large waterfowl with a long neck and webbed feet. G O E O S 4 A dental structure in the mouth used for biting and grinding. O O T H T 5 The lower limb segment used for standing and walking. O O T F 6 A small nocturnal rodent with a pointed snout and long tail. E U M O S 7 A tiny parasite that clings to hair or feathers. E U O L S 8 A small cube with numbered faces used to generate random results in games. I D E