Scab. Rabid. Scabrid.

This word sounds like it belongs on a t-shirt worn by an angry kid with a purple Mohawk and spiked leather wristbands. And like many punk rock band names, it is, in fact, lifted straight out of the medical dictionary: “scabrid” typically refers to skin (or other tissue) that is scaly or rough to the touch. Often the flesh is rough, delicate, exhibiting irregular projections, lesions, bumps, knobs, or disgusting little follicles. Caress Tommy Lee Jones’ right cheek and perhaps you’ll feel something scabrid.

Since plants are more often scaly than humans, Scabrid is a term probably used more frequently by botanists than celebrity dermatologists. A synonym for scabrid is scabrous. Its antonym? Glabrous, which sounds happy, and happily it is just as fun to say with your mouth full.

It is sometimes used to mean “difficult” or “knotty,” as in the sentence, “I do say, good sir, your choice of noose is particularly scabrid…would you mind removing it from my neck before I develop a nasty rash?”