D defs.my
Entry 1 sense Webster, 1913

Epithesis

· E·pith·e·sis · IPA /ˌɛpɪˈθiːsɪs/
01 n. The addition of a letter at the end of a word, without changing its sense; as, numb for num, whilst for whiles.
  1. 1.
    The addition of a letter at the end of a word, without changing its sense; as, numb for num, whilst for whiles.