as solid as a rock

Utterly firm, immovable

Completely stable, dependable, or unshakable.

The phrase describes something—or someone—that can be relied upon absolutely: Their marriage is as solid as a rock.

It can also describe physical sturdiness: The old bridge is as solid as a rock.

Often shortened to solid as a rock.

dependable

trustworthy

Worthy of confidence

reliableConsistently performing as expected
steadfastFirmly loyal, unshakeable
faithfulConsistently loyal and true

loyal · consistent · unwavering · staunch · true · devoted · committed · dedicated · honorable · credible

unyielding

resolute

Fixed in purpose

adamantStubbornly refusing to yield
unbendingRefusing to change position
inflexibleUnable to bend

uncompromising · stubborn · obdurate · immovable · rigid · tenacious · iron-willed · indomitable · determined · unshakable

stable

sturdy

Solidly built, durable

anchoredFixed securely in position
groundedStable and realistic
secureProtected from harm

steady · firm · fixed · immovable · fortified · robust · durable · reinforced · unshakable · balanced

Categories

Similesas blind as a bat, as busy as a bee, as cold as ice, as cool as a cucumber, as dead as a doornail

Opposites

physical stability and structural integrity

as solid as a rockflimsy

Weak and easily damaged

fragile · rickety · shaky · unstable · wobbly

reliability and dependability

as solid as a rockunreliable

Not consistently performing

undependable · untrustworthy · flaky · fickle · inconsistent

emotional or psychological stability

as solid as a rockunstable

Prone to sudden change

volatile · falling apart · fragile · shaky · unhinged

Family

rock, solid, rocky, rocks, rocking, bedrock, solidify, solidity, solids

Familiarity: Top 50,000
Profile: Known to kids · Used worldwide · Timeless · Concrete · Positive · Everyday, not technical · Rated G