1. 12 The scab has sloughed off.

2. Various biting lice, fleas, and louse flies are Commensals in that they feed harmlessly on the feathers of birds and on sloughed-off flakes of skin from mammals.

3. Blued booed brewed brood chewed clued Cooed crude cued dude feud food glued hewed hued jude lewd mewed mood mooed nude prude queued rood rude rued screwed shoed shooed shrewd skewed sloughed slued spewed stewed strewed sued trued viewed who'd wooed you'd.