Standard Lemma guide

infeasibility

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

The state of being infeasible or impractical.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: nonfeasibility, unfeasibility, unrealizability

Antonyms: feasibility, realizability, realizableness

2

noun

Meaning 2

the quality of not being doable

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: unfeasibility

Antonyms: feasibility

Broader terms: impracticability, impracticableness

History

Etymology

Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin in-bor. Middle English in- English in- English feasibility English infeasibility From in- + feasibility.