Sarff, n. a serpent
Sarffol, a. like a serpent
Sarffwydd, n. service trees
Sarid, n. an overplus
Sarn, n. a causeway; a paving
Sarnu, v. to strew; to lay a path
Sarth, n. reptile; scorpion; hedgehog; sarcasm
Sarthu, v. to creep along
Sarug, a. surly, stern, dogged
Sarugedd, Sarugrwydd, n. surliness