Word.ws English Dictionary

-ad

-ad suffix: a unit or set (especially of a specified number).

Suffix (1)

-ad (noun-forming suffix, plural -ads)

  1. A unit or set (especially of a specified number).
    • chiliad, duodecad

Suffix (2)

-ad (adverb-forming suffix, comparative more -ad, superlative most -ad)

  1. toward
    • tibiad; ulnad

Forms of -ad

plural-ads
comparativemore -ad
superlativemost -ad

Origin of -ad

From Ancient Greek -άς (-ás) (genitive -άδος (-ádos)): a suffix forming feminine nouns.

Derived from Latin ad (“at”), from Proto-Italic *ad, from Proto-Indo-European *h₂éd. Coined by British anatomist John Barclay.

Words formed from -ad

Questions about -ad

What does -ad mean?
-ad means a unit or set (especially of a specified number).
What part of speech is -ad?
-ad is a suffix.

Words near -ad in the dictionary

  1. -aceous
  2. -acious
  3. -acity
  4. -acusis
  5. -acy
  6. -ad
  7. -ade
  8. -adelic
  9. -adenia
  10. -ades
  11. -adic

Source and license

Adapted from Wiktionary: -ad (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “-ad.” Word.ws, https://word.ws/-ad. Based on Wiktionary, CC BY-SA 4.0.