infeasible

English

Etymology

From in- +‎ feasible. Cognate to French infaisable.

Adjective

infeasible (comparative more infeasible, superlative most infeasible)

1. not feasible

   Antonym: feasible

Usage notes

Usage varies between infeasible, unfeasible, and “not feasible” – all are synonymous, but usage varies regionally and over time, and unfamiliar usage is often jarring or sounds wrong. Today infeasible is somewhat more common in American usage, though traditionally unfeasible was more common, being surpassed by infeasible in the late 1970s (in both America and Britain). Of these, infeasible is etymologically pure – formed of French/Latin roots – and cognate to French infaisable, while unfeasible is hybrid, combining Germanic un- with Latinate feasible.

Derived terms

• infeasibility
• infeasibleness
• infeasibly

 

Translations

not feasible

• Bulgarian: неосъществим (bg) (neosǎštestvim), неизпълним (bg) (neizpǎlnim)
• Czech: neuskutečnitelný, nerealizovatelný
• Esperanto: nefarebla
• French: infaisable (fr)
• German: undurchführbar

• Greek: ανέφικτος (el) (anéfiktos)
• Manx: neuchooilleentagh
• Portuguese: inviável (pt), inexequível (pt)
• Russian: неосуществи́мый (ru) (neosuščestvímyj), невозмо́жный (ru) (nevozmóžnyj), невыполни́мый (ru) (nevypolnímyj)
• Spanish: imposible (es), no factible