darn
vt., vi.
5< MFr dial. darner, to piece together, mend < Bret darn, a piece < IE base *der3, to pull off, split apart > TEAR16 to mend (cloth) or repair (a hole or tear in cloth) by sewing a network of stitches across the gap
n.
a darned place in fabric
—SYN MEND
darn$er
n.
Today, very few people mend clothing, and so use "darn" only as euphemism for "damn?.