〜が早いか
Examples
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〜や否や
As soon as... / No sooner than... (Expresses that the second action occurs immediately after the first, typically describing a natural, instantaneous reaction or event.)
〜なり
As soon as... (Expresses that the subject performs an unexpected, sudden, or non-routine action immediately after another action.)
〜を余儀なくされる
To be forced to do or undergo something due to unavoidable circumstances (strongly collocates with nouns of negative change/stoppage like 延期, 中止, 変更, or 撤退).
〜を控えて
With an event, deadline, or major life change close at hand; ahead of (strongly collocates with nouns like 試験, 出産, 開業, or 帰国).
〜を契機に（して）
Taking [something] as a decisive opportunity/turning point to (often resulting in a major, positive change).
〜に相違ない
Without a doubt; must be. Expresses the speaker's strong conviction or logical certainty based on evidence.