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What is another word for rock solid?

Need synonyms for rock solid? Here's a list of similar words from our thesaurus that you can use instead.

Contexts ▼

Very difficult to move

Deserving of trust, or able to be trusted reliably

Consisting of matter all through

Firm, strong, or substantial

Based on, or displaying, common sense

… more ▼

Adjective

Very difficult to move

solid as a rock

“Advocate and author John Mayer looks every inch the rock solid establishment man.”

Adjective

Deserving of trust, or able to be trusted reliably

above suspicion

tried and trusted

tried and tested

full of integrity

worthy of trust

as good as one's word

dyed-in-the-wool

high-principled

on the up and up

uncounterfeited

capable of being trusted

able to hold water

straightforward

copper-bottomed

incontrovertible

well-engineered

fair and square

well engineered

tested and proved

well-established

carrying the load

good as one's word

to be counted on

from the horse's mouth

straight from the horse's mouth

put to the test

telling the truth

straight-shooting

honest-to-goodness

on the up-and-up

meaning what one says

through and through

bred-in-the-bone

through-and-through

always effective

well thought out

within the bounds of possibility

with a ring of truth

carrying conviction

more ❯

Adjective

Consisting of matter all through

as hard as stone

as hard as iron

as hard as a rock

self-opinionated

incontrovertible

solid as a rock

sticking to one's guns

tough nut to crack

unimpressionable

set in concrete

standing one's ground

uncompassionate

proof against persuasion

dyed-in-the-wool

more ❯

Adjective

Firm, strong, or substantial

well-constructed

well-established

storm-resistant

industrial-strength

desensitized^US

water-resistant

invulnerable to

desensitised^UK

lacking sentiment

toughened by experience

as hard as nails

as tough as old boots

straightforward

able to withstand

common-sensical

solid as a rock

more ❯

Adjective

Based on, or displaying, common sense

based on hard data

based on hard facts

able to hold water

within accepted bounds

unobjectionable

unexceptionable

well-thought-out

well thought out

more ❯

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