undeformable
Cannot be bent
Undeformable describes something that cannot be deformed—that resists bending, warping, or changing shape under pressure.
The term appears in physics and engineering contexts: an undeformable rigid body, treating the Earth as undeformable for purposes of calculation.
In practice, most things labeled undeformable are idealized models rather than actual materials.
Unable to bend
- stiffNot easily bent
- unyieldingRefusing to give way
- unbendingRefusing to change position
- inelasticResistant to deformation
hard · solid · nonflexible · unbendable · unpliable · adamantine · uncompressible
Impossible to damage permanently
- unbreakableImpossible to damage
- hardwearingResistant to damage
- toughDurable and strong
- robustStrong and durable
heavy-duty · reinforced · wear-resistant · resistant · imperishable · armored · rugged · impact-resistant
Incapable of being changed
- unchangingNot varying at all
- fixedRestored or immovable
- invariableNot subject to change
- unalterableIncapable of being changed
constant · irreversible · stable · unmodifiable · set · locked · unchanged · preserved
inflexible
Unable to bend
- stiffNot easily bent
- unyieldingRefusing to give way
- unbendingRefusing to change position
inelastic · hard · solid · nonflexible · unbendable · unpliable · adamantine · uncompressible
indestructible
Impossible to damage permanently
- unbreakableImpossible to damage
- hardwearingResistant to damage
- toughDurable and strong
robust · heavy-duty · reinforced · wear-resistant · resistant · imperishable · armored · rugged · impact-resistant
immutable
Incapable of being changed
- unchangingNot varying at all
- fixedRestored or immovable
- invariableNot subject to change
unalterable · constant · irreversible · stable · unmodifiable · set · locked · unchanged · preserved · maintained
deform, deformable, deformed, deforming, deforms, deformation, deformations, deformity, deformities