Suffix /(?)/

1. 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. A subscript mark, number, or letter. See Subscript, a. (Math.)

imp. & p. p. Suffixed; p. pr. & vb. n. Suffixing

1. To add or annex to the end, as a letter or syllable to a word; to append.