der-

To split, peel, flay; with derivatives referring to skin and leather.

1. tear¹, from Old English teran, to tear, from Germanic *teran.

2. tart¹, from Old English teart, sharp, severe, from Germanic *ter-t-.

3. Suffixed zero-grade form *dr̥-tom, “something separated or discarded.” turd, from Old English tord, turd, from Germanic *turdam, turd.

4. Reduplicated form *de-dr-u-. tetter, from Old English tet(e)r, eruption, skin disease.

5. derris, from Greek derris, leather covering.

6. Suffixed form *der-mn̥. -derm, derma¹, -derma, dermato-; epidermis, from Greek derma, skin.

7. dahl, dhurrie, from Sanskrit darati, he splits.

 

[Pokorny 4. der- 206.]

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