1. (n.) A letter, letters, syllable, or syllables added or appended to the end of a word or a root to modify the meaning; a postfix.

2. (n.) A subscript mark, number, or letter. See Subscript.

3. (v. t.) To add or annex to the end, as a letter or syllable to a word; to append.

IC analysis PS Parthian shot accidence add addendum addition adjoin affix affixation afterthought agglutinate allomorph allonge amend annex append appendix attach back matter bound morpheme burden chorus coda codicil colophon commentary complicate conclusion conjoin conjugation consequence continuance continuation cutting declension decorate derivation desinence difference of form double take dying words enclitic encumber ending envoi epilogue follow-through follow-up formative free form glue on hitch on immediate constituent analysis infix infixation inflection interlineation interpolation join join with last words marginalia morph morpheme morphemic analysis morphemics morphology morphophonemics note ornament paradigm parting shot paste on peroration plus postface postfix postlude postscript prefix prefixation proclitic put with radical refrain rider root saddle with scholia second thought sequel sequela sequelae sequelant sequent sequitur slap on stem subjoin subscript suffixation superadd superpose supplement swan song tack on tag tag on tail theme unite with word-formation