Ymddiffyniad, n. a defending one’s self
Ymddigoni, v. to self-suffice
Ymddihatru, v. to divest one’s self of covering
Ymddihoeni, v. to divest one’s self of vivacity
Ymddiloni, v. to divest one’s self of cheerfulness
Ymddiodi, v. to supply one’s self with drink
Ymddiofalu, v. to divest one’s self of care
Ymddiogeliad, n. a self-securing
Ymddiogi, v. to become lazy
Ymddiriad, n. confidence