extendability

Capacity for lengthening

Extendability is the quality of being extendable—the capacity to be lengthened, expanded, or added to.

The term appears most often in technical contexts: software with extendability can accommodate new features; a table with extendability has leaves that increase its length.

The platform's extendability made it popular with developers.

Extensibility means the same thing and is more common.

adaptability

flexibility

Ability to adapt easily

modifiability · customizability · convertibility · reconfigurability · upgradability · plasticity · malleability · pliability · elasticity · resilience

software

modularity

Divisibility into independent units

APIs · frameworks · libraries · inheritance · abstraction · interfaces · codebase · refactoring · compatibility · interoperability

growth

expansion

Increase in scope

elongation · prolongation · stretching · lengthening · broadening · widening · scaling · increment · magnification · development

durability

longevity

Duration of existence

stability · permanence · dependability · sustainability · resilience · lifespan · serviceability · ruggedness · sturdiness · persistence

Opposites
capacity for expansion or growth

extendabilityfixedness

State of being stationary

finality · limitation · inflexibility · rigidity · closedness

flexibility and adaptability

extendabilityrigidity

State of being unbending

inflexibility · inadaptability · permanence · unchangeability · immutability

Family

extend, extent, extension, extensive, extended, extending, extensions, extends, tensile

Familiarity
Top 500,000
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Used worldwide · Timeless · Abstract · Rated G