suffix

UK: /ˈsʌfɪks/

US: /n. ˈsʌfɪks; v. ˈsʌfɪks, səˈfɪks/

US: (n. suf′iks; v. suf′iks, sə fiks′)

WordReference Random House Learner's Dictionary of American English © 2025

suf•fix /n. ˈsʌfɪks; v. ˈsʌfɪks, səˈfɪks/   n. [countable]

1. Grammar an affix that follows the element to which it is added, as -ment in entertainment.

v. [~ + [object]  

2. Grammar to add as a suffix.

suf•fix•a•tion /ˌsʌfɪkˈseɪʃən/  n. [uncountable] See -fix-.

WordReference Random House Unabridged Dictionary of American English © 2025

suf•fix  (n. suf′iks;v. suf′iks, sə fiks′), n. 

1. Grammar an affix that follows the element to which it is added, as -ly in kindly.
2. something added to the end of something else.

v.t. 

3. Grammar to add as a suffix.
4. to affix at the end of something.
5. to fix or put under.

v.i. [Gram.]

6. to admit a suffix.
7. to add a suffix.

• Neo-Latin suffixum, noun, nominal use of neuter of Latin suffixus (past participle of suffīgere to attach on top of ), equivalent. to suf- suf- + fixus (see fix)
• 1595–1605

suf•fix•al  (suf′ik səl, sə fik′-), adj.  suf•fix•a•tion  (suf′ik sā′shən), suf•fix•ion  (sə fik′shən), n. 

Collins Concise English Dictionary © HarperCollins Publishers::

suffix noun / ˈsʌfɪks/

1. an affix that follows the stem to which it is attached, as for example -s and -ness in dogs and softness
   Compare prefix1
2. anything that is added at the end of something else

verb / ˈsʌfɪks səˈfɪks/

1. (transitive) to add (a morpheme) as a suffix to the end of a word
2. (transitive) to add (something) at the end of a sentence, comment, or piece of writing

Etymology: 18th Century: from New Latin suffixum, from Latin suffixus fastened below, from suffīgere, from sub- + fīgere to fasten