Word.ws English Dictionary

dumb as nails

dumb as nails adjective: very dumb (stupid).

Adjective

dumb as nails (not comparable)

  1. (simile) Very dumb (stupid).

Questions about dumb as nails

What does dumb as nails mean?
Dumb as nails means very dumb (stupid).
What part of speech is dumb as nails?
Dumb as nails is an adjective.

Words near dumb as nails in the dictionary

  1. dumb as a sack of bricks
  2. dumb as a sack of hammers
  3. dumb as a stump
  4. dumb as an ox
  5. dumb as dirt
  6. dumb as nails
  7. dumb as rocks
  8. dumb ass
  9. dumb asses
  10. dumb barge
  11. dumb barges

Source and license

Adapted from Wiktionary: dumb as nails (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.

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