Cydymrodd, v. to yield mutually
Cydymroi, v. to resign mutually
Cydymryson, n. mutual strife
Cydyrauniad, n. mutual union
Cydymweddu, v. to conform mutually
Cydyn, n. a little bag
Cydyru, v. to drive together
Cyf, a. prefix of general use, denoting a mutual act or effect
Cyfab, a. with foal
Cyfaddas, a. convenient, meet