Definitions from Wiktionary (solid as a rock)
▸ adjective: (simile) Extremely thick and heavy, so as to make it impossible to move.
▸ adjective: (simile, of a person) Very reliable and dependable
▸ Words similar to solid as a rock
▸ Usage examples for solid as a rock
▸ Idioms related to solid as a rock
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▸ Popular nouns described by solid as a rock
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▸ adjective: (simile) Extremely thick and heavy, so as to make it impossible to move.
▸ adjective: (simile, of a person) Very reliable and dependable
Similar:
hard as a rock,
bone hard,
hard as iron,
heavy,
heavy as a dead donkey,
tough as old boots,
hard as nails,
iron,
hard as the nether millstone,
sound,
more...
Opposite:
▸ Words similar to solid as a rock
▸ Usage examples for solid as a rock
▸ Idioms related to solid as a rock
▸ Wikipedia articles (New!)
▸ Popular nouns described by solid as a rock
▸ Words that often appear near solid as a rock
▸ Rhymes of solid as a rock
▸ Invented words related to solid as a rock