How to say "feasibility" in Japanese

• 実現可能性じつげんかのうせい
  no-adjectiveFeasibility as whether a plan, proposal or project can actually be realized; literally 'the possibility of realization', so the meaning is self-explanatory. Typical when discussing whether a goal is achievable.
• フィージビリティ
  nounThe katakana loanword, a direct borrowing of 'feasibility'. At home in business and project-planning contexts, as when assessing whether a proposed project can realistically be carried out.
• 具体性ぐたいせい
  nounPrimarily 'concreteness': how concrete and specific something is rather than vague or abstract. It only marginally covers 'feasibility', so for that sense this is seldom the word you want.
  きみの説明せつめいは具体性ぐたいせいに欠かける。↗

  Your explanation lacks concreteness.
• 実現性じつげんせい
  nounRealizability: whether something can be brought into being or put into practice; it also extends to practicability and operability. A compact counterpart to 実現可能性, typical in technical assessments of designs and systems.

All four are less common choices for 'feasibility': use 実現可能性 or the compact 実現性 when asking whether something can be realized, 「フィージビリティ」 as the katakana loanword in business contexts, while 具体性 really means 'concreteness'.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 実現可能性じつげんかのうせいfeasibility
• フィージビリティfeasibility
• 具体性ぐたいせいconcreteness
• 実現性じつげんせいpracticability