in all likelihood
in all likelihood は英検準1級レベルの英単語で、「ほぼ確実に」という意味があります。発音記号は /ɪn ɔːl ˈlaɪklɪhʊd/ です。
ほぼ確実に
解説 Definition
「in all likelihood」は「ほぼ確実に」「まず間違いなく」といった意味で、未来の出来事や判断に対して強い見込みを示すときに使います。やや改まった表現で、書き言葉やフォーマルな場面で多く用いられます。
In all likelihood means very probably or almost certainly. It is used when you think something will happen based on the situation or available information. It sounds a little more formal than simply saying probably.
覚え方のコツ Memory Tip
核は likely（ありそうな）です。likelihood は『ありそう度＝見込み』という名詞なので、in all likelihood は『あらゆる点から見て、ありそう』→『ほぼ確実に』とつながります。probably より硬く、certainly ほど断定しない表現だと整理すると覚えやすいです。ニュースや説明文で will in all likelihood ... や There will in all likelihood be ... の形が多く、根拠のある強い予測を述べる場面で使うと定着します。
The key word is `likely`. `Likelihood` means how likely something is, so `in all likelihood` means "when you look at everything, it seems very likely." It sounds more formal than `probably`, and it often appears in careful predictions.
例文
In all likelihood, the final exam will cover the same themes as last year.
ほぼ確実に、期末試験は昨年と同じテーマを扱うでしょう。
In all likelihood, they will announce the merger after the quarterly report.
四半期報告の後に合併を発表する可能性が高いです。
in all likelihood の類義語・関連語
in all likelihood の語源・成り立ち Etymology
likelihoodは古英語līclīc（似ている・ありそうな）＋接尾辞-hoodで「ありそうな状態」。in allで「あらゆる点で」を加え「あらゆる可能性において」→「ほぼ確実に」。likely（ありそうな）、livelihood（生計）と関連。
Likelihood is built from likely plus the suffix -hood, which means a state or condition. Likely goes back to Old English lic, meaning "similar" or "having the appearance of," so likelihood originally meant the state of seeming probable. The full phrase in all likelihood developed the sense of "considering all signs," and related words include likely and livelihood.
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