• -k-

    Pronunciation

    This interfix is strictly a written phenomenon, serving to indicate the preservation of a hard c.

    Interfix

    interfix

    1. (chiefly in verb forms) Added after a word’s terminal ‘c’ when it is suffixed by a morpheme beginning in ‘e’, ‘i’, ‘y’, ‘æ’, or ‘œ’ (usually -ed or -ing), so as to preserve its “hard” sound (as opposed to ).
    © Wiktionary