unusability
Cannot be operated
Unusability is the quality of being impossible or impractical to use.
Software with poor design has high unusability.
The term appears in technical contexts—user experience research, product testing, accessibility audits—where measuring what makes something fail matters as much as what makes it succeed: The unusability of the interface drove customers away.
Not suited for use
- unfeasibleNot capable of execution
- unviableIncapable of succeeding
- impracticableImpossible to implement
- unrealisticLacking basis in reality
untenable · unmanageable · inconvenient · unsuitable · inefficient · cumbersome · unwieldy · burdensome
Not performing its purpose
- inoperativeNot able to function
- defectiveHaving inherent faults
- brokenDamaged beyond function
- malfunctioningOperating incorrectly or failing
faulty · dysfunctional · unworkable · unreliable · buggy · glitchy · unresponsive · incompatible
Awkwardly heavy or bulky
- unwieldyAwkward to manipulate
- clunkyAwkward and cumbersome
- awkwardLacking grace or ease
- clumsyLacking physical coordination
inelegant · unintuitive · unergonomic · confusing · frustrating · counterintuitive · unnavigable · cluttered
Cannot be reached
- barrierObstruction preventing passage
- exclusionBeing barred from participation
- unreadableCannot be deciphered
- unclearNot easily understood
incomprehensible · blocked · restricted · unavailable · locked · prohibitive · discriminatory · non-compliant
impractical
Not suited for use
- unfeasibleNot capable of execution
- unviableIncapable of succeeding
- impracticableImpossible to implement
unrealistic · untenable · unmanageable · inconvenient · unsuitable · inefficient · cumbersome · unwieldy · burdensome · unworkable
nonfunctional
Not performing its purpose
- inoperativeNot able to function
- defectiveHaving inherent faults
- brokenDamaged beyond function
malfunctioning · faulty · dysfunctional · unworkable · unreliable · buggy · glitchy · unresponsive · incompatible · corrupted
cumbersome
Awkwardly heavy or bulky
clumsy · inelegant · unintuitive · unergonomic · confusing · frustrating · counterintuitive · unnavigable · cluttered · overcomplicated
inaccessible
Cannot be reached
- barrierObstruction preventing passage
- exclusionBeing barred from participation
- unreadableCannot be deciphered
unclear · incomprehensible · blocked · restricted · unavailable · locked · prohibitive · discriminatory · non-compliant · unadapted
unusabilityusability
Ease of interaction quality
usefulness · functionality · workability · utility · serviceability
unusabilityusability
Ease of interaction quality
user-friendliness · accessibility · intuitiveness · navigability · ergonomics
use, usable, usability, unusable, used, user, users, using, uses