unflippable

Resistant to flipping

Unable to be flipped or turned over.

The word usually appears in contexts where flipping would normally be possible or expected: an unflippable mattress designed to be used one side only, or an unflippable pancake stuck to the pan.

Figuratively, someone unflippable cannot be persuaded to change sides: The swing voters were gone, but the base remained unflippable.

immovable

anchored

Fixed securely in position

rootedFirmly established in place
embeddedSet firmly within something
entrenchedFirmly established, resistant to change

planted · fixed · stationary · immobile · steadfast · unyielding · rigid · permanent · stuck · lodged

stable

balanced

In a state of equilibrium

steadyFixed, not fluctuating
weightedMade intentionally heavier
groundedStable and realistic

settled · level · secure · sturdy · solid · planted · bottom-heavy · counterweighted · stabilized

irreversible

permanent

Fixed without end

finalLast and decisive
unchangeableImpossible to modify
unalterableIncapable of being changed

binding · conclusive · decisive · irrevocable · settled · locked-in · one-way · committed · sealed · done

fastened

bolted

Fastened or fled suddenly

rivetedFastened or enthralled
nailedSecured with fasteners
screwedSecured with threads

welded · soldered · cemented · glued · anchored · clamped · fused · stapled · pinned · bracketed

Opposites

physical stability/tippability

unflippableflippable

Capable of being turned over

tippable · unstable · top-heavy · wobbly · tippy

reversibility/changeability

unflippableflippable

Capable of being turned over

reversible · convertible · switchable · invertible · toggleable

emotional/psychological steadfastness

unflippablebreakable

Capable of shattering

hot-headed · volatile · excitable · thin-skinned · temperamental

Family

flip, flips, flipped, flipping, flipper, flippers, flippable

Familiarity: Top 500,000
Profile: Used worldwide · Timeless · Everyday, not technical · Rated G