Cydymgais, n. competition
Cydymgilio, to recede mutually
Cydymgyrch, n. concurrence
Cydymholi, v. enquire mutually
Cydymlid, n. mutual pursuit
Cydymliw, n. mutual reproach
Cydymaith, n. companion
Cydymeithasu, v. to consociate
Cydymoddef, v. to bear mutually
Cydymranu, v. to secede together