Suffix1. (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.
Thesaurus Entries
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