Yn seiliedig ar derate, geiriau newydd a ffurfir drwy ychwanegu un llythyr ar ddechrau neu ar ddiwedd:
a - adeert b - aerated c - berated d - debater f - tabered h - catered l - cerated m - created p - reacted r - derated s - redated t - draftee v - earthed w - hearted x - alerted
