Cyweiriol, a. corrective
Cyweiriwr, n. a repairer
Cyweithas, n. a society; commerce; intercourse
Cyweithasiad, n. association
Cyweithasol, a. social
Cyweithasrwydd, courtesy, complaisance
Cyweithasu, v. to have intercourse; to be social together
Cyweithio, v. to co-operate
Cyweithydd, n. a co-efficient; an auxiliary; a multitude
Cywely, n. a bedfellow