既成事実
きせいじじつ
kiseijijitsu
= established fact; fait accompli
既成事実 refers to a fact that has already been established — an action completed before others could object, leaving them with little choice but to accept it. The word captures a quiet but deliberate strategy woven into Japanese social and professional life.
既成事実 describes a situation or outcome that has been made real through action, rendering debate or reversal effectively impossible. It carries the nuance of something done on purpose ahead of approval: by the time others learn of it, the decision has already taken effect. In everyday contexts the tone can be light and playful — a surprise booking or an already-signed agreement — but in political and business settings the word takes on a more calculated weight, implying that the actor intentionally bypassed consensus. Unlike simply “an established fact,” 既成事実 almost always implies that someone made it a fact, often strategically.
The key phrase to learn alongside this word is 既成事実を作る (kiseijijitsu wo tsukuru) — literally “to make an established fact,” meaning to act first and seek permission later. Learners sometimes confuse this with 事実 alone, but 既成事実 always stresses that the fact was deliberately created, not merely discovered. In formal writing and news reports you will often see 既成事実化する (kiseijijitsuka suru), a verb form meaning “to turn something into a fait accompli.” Register-wise, the word fits both conversational and formal Japanese with no change in form.
The four characters break down as follows: 既 (ki) means “already” or “previously,” 成 (sei) means “to become” or “to be accomplished,” 事 (ji) means “matter” or “affair,” and 実 (jitsu) means “truth” or “substance.” Together they form “the substance of a matter that has already come to be” — a completed reality. This compound structure is characteristic of yojijukugo (四字熟語), four-character idioms that condense a complex idea into a single, weighty phrase.
Everyday use
彼は上司に相談する前に契約書にサインして、既成事実を作ってしまった。
Kare wa jōshi ni sōdan suru mae ni keiyakusho ni sain shite, kiseijijitsu wo tsukutte shimatta.
He signed the contract before consulting his boss, creating an established fact.
Casual / Social Media
「もう航空券を買ったから既成事実だね。一緒に旅行しようよ！」
“Mō kōkūken wo katta kara kiseijijitsu da ne. Issho ni ryokō shiyō yo!”
“I already bought the plane tickets, so it’s a done deal. Let’s travel together!”
Formal / Cultural context
政府はその政策を議会の承認なしに実施し、既成事実化を図った。
Seifu wa sono seisaku wo gikai no shōnin nashi ni jisshi shi, kiseijijitsuka wo hakatta.
The government implemented the policy without parliamentary approval, attempting to turn it into a fait accompli.
In Japanese organizational culture, decision-making often relies on a process called nemawashi (根回し) — carefully building consensus behind the scenes before a formal proposal is made. 既成事実 sits at the opposite end of this spectrum: rather than seeking agreement in advance, the actor moves first and forces acceptance after the fact. When someone is described as having “made a 既成事実,” Japanese listeners immediately sense that proper process was bypassed, which can carry a negative connotation in group-oriented workplaces — even when the outcome itself was reasonable.
The concept maps closely onto the French diplomatic term fait accompli, which entered international political vocabulary to describe military or territorial actions completed before other powers could respond. Japanese media frequently applies 既成事実 in exactly this sense: territorial disputes, corporate mergers announced without prior disclosure, or policy decisions enacted before legislative review. The word’s prevalence in news headlines reflects how acutely Japanese public discourse tracks the boundary between legitimate authority and unilateral action.
In casual modern usage — especially among younger speakers on social media — 既成事実 has softened into a light-hearted term for locking in plans that friends or partners might have resisted if consulted first. Booking a trip, ordering food for the group, or announcing a shared purchase can all be framed with a joking 既成事実だね, turning a once-formal concept into everyday humor about commitment and spontaneity.