Dychwelfa, recurrence; return
Dychweliad, n. a recurring; a returning; a conversion
Dychwelwr, n. one who turns or returns; a convert
Dychwelyd, v. to return
Dychwydd, n. a heaving
Dychwyl, a. revolution
Dychwysu, v. to sweat
Dychyfaer, n. recounter
Dychyfalâu, v. to assimilate
Dychyfarfod, v. to meet