Sul, n. what extends round; the Sun. Dydd Sul, Sunday
Sulgwyn, n. Whitsuntide
Sulw, n. observation, remark
Sum, magnitude, size; sum
Sumio, v. to deduce the size
Sumiol, a. relating to size
Suo, v. to buzz; to lull, to hush
Sur, n. an acid: a. acid; stale
Suran, n. a sour plant, sorrel
Surder, n. sourness, acidity