Un-fair, annheg, anonest
Un-fed, anmhesgedig
Un-fit, anghymwys: anghymwyso
Un-fold, agor, egluro; dadblygu
Un-hook, dadfachu, difachu
U-nit, un, y rhif un
U-nite, uno, cyduno, cydio
Un-just, anghyfiawn, annheg
Un-kind, angharedig, annhirion
Un-known, anadnabyddus