シナリオ

シ

ナ

リ

オ

Common wordJLPTN1Freq.FrequencyTop 5,000

Meanings

script; screenplay

Refers to the written text of a film, play, or broadcast, including dialogue and stage directions.

Used for a hypothetical sequence of events, a plan, or an outline of a possible future situation.

シナリオを書かくto write a script/screenplay
彼かれは初はじめて映えい画がのシナリオを書かいた。
He wrote a movie script for the first time.
シナリオ通どおりに〈動どう詞し〉to go/proceed exactly according to the scenario/plan
交こう渉しょうはシナリオ通どおりに進すすんだ。
The negotiation proceeded exactly as planned.
最さい悪あくのシナリオworst-case scenario
最さい悪あくのシナリオも想そう定ていしておくべきだ。
We should also prepare for the worst-case scenario.
シナリオが崩くずれるfor a plan/scenario to fall apart
予よ想そうしていたシナリオが崩くずれてしまった。
The scenario we had anticipated fell apart.

脚きゃく本ほんN1sense 1
脚本 is the standard native Japanese word for a script or screenplay, while シナリオ is a loanword with a more modern feel that can also mean a hypothetical plan.
台だい本ほんN1sense 1
台本 emphasizes the physical booklet actors use on set or stage, whereas シナリオ refers more to the written work itself.
筋すじ書がき sense 2
筋書き is a plot outline or synopsis, narrower than シナリオ, which can mean a full script or a broader hypothetical scenario.
想そう定ていN1sense 2
想定 focuses on an assumed premise or hypothesis, while シナリオ describes a fuller imagined sequence of events built on such assumptions.

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計けい画かくN4sense 2
計画 is a concrete plan someone intends to carry out, whereas シナリオ (in its scenario sense) is often a possible or hypothetical outcome, not necessarily intended.
スクリプト
シナリオ emphasizes the overall story or scenario structure of a screenplay, whereas スクリプト refers more to the literal written script text.

編へんN1
Used when counting a scenario (シナリオ) as a finished literary or dramatic work, e.g. 一編のシナリオ.

Borrowed from English 'scenario', which itself comes from Italian 'scenario', derived from Latin 'scaena' (stage).