unimplementable

Impossible to execute

Unimplementable describes something that cannot be put into practice or made to work.

A policy might be unimplementable because of legal barriers, technical limitations, or practical constraints: The proposal was ambitious but ultimately unimplementable.

The word appears most often in technical, policy, and business contexts where feasibility matters.

impractical

unworkable

Impossible to execute

unrealizable · unachievable · nonviable · inoperable · unexecutable · unattainable · insurmountable · impossible · hopeless · futile

theoretical

abstract

Condensed version of text

idealistic · utopian · notional · philosophical · ivory-tower · impractical · unrealistic · visionary · academic · armchair

complex

intricate

Elaborately detailed, many parts

byzantine · tangled · knotty · multifaceted · elaborate · unwieldy · cumbersome · intractable · thorny · perplexing

resource

costly

High in price

time-consuming · labor-intensive · understaffed · underfunded · budgetless · overambitious · unsustainable

Opposites
feasibility of execution

unimplementableimplementable

Able to be enacted

executable · doable · achievable · feasible · actionable

Family

implement, implements, implemented, implementing, implementer, implementers, implementation, implementations, implementable

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