Definitions from Wiktionary (dumb as a rock)
▸ adjective: (US, simile) Very stupid; dumb as a post.
▸ Words similar to dumb as a rock
▸ Usage examples for dumb as a rock
▸ Idioms related to dumb as a rock
▸ Wikipedia articles (New!)
▸ Popular nouns described by dumb as a rock
▸ Words that often appear near dumb as a rock
▸ Rhymes of dumb as a rock
▸ Invented words related to dumb as a rock
▸ adjective: (US, simile) Very stupid; dumb as a post.
Similar:
dumb as a box of rocks,
dumb as a doorknob,
dumb as nails,
dumb as a stump,
dumb as an ox,
dumb as a brick,
dumb like a fox,
thick as a plank,
thick as a brick,
thick as two short planks,
more...
▸ Words similar to dumb as a rock
▸ Usage examples for dumb as a rock
▸ Idioms related to dumb as a rock
▸ Wikipedia articles (New!)
▸ Popular nouns described by dumb as a rock
▸ Words that often appear near dumb as a rock
▸ Rhymes of dumb as a rock
▸ Invented words related to dumb as a rock