Cysgodi, v. to shadow; to shelter
Cysgodiad, n. a shadowing
Cysgodog, a. sheltering
Cysgodol, a. shadowy, sheltering
Cysgrwydd, n. sleepiness
Cysgu, v. to sleep; to benumb
Cysgwr, n. a sleeper
Cysgwal, n. a dormitory
Cysiad, n. somnolence
Cysni, n. drowsiness