An affix added to the end of a word or stem, serving to form a new word or functioning as an inflectional ending, such as -ness in gentleness, -ing in walking, or -s in sits.
tr.v. suf·fixed, suf·fix·ing, suf·fix·es
To add as a suffix.
[New Latin suffīxum, from Latin, neuter of suffīxus, past participle of suffīgere, to fasten underneath, affix : sub-, sub- + fīgere, to fix, fasten; see dhīgw- in the Appendix of Indo-European roots.]
suf′fix·ation (sŭf′ĭk-sāshən), suf·fixion (sə-fĭkshən) n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.