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If something that has happened was unforeseen, it was not expected to happen or known about beforehand. Radiation may damage cells in a way that was previously unforeseen. Unfortunately, โ€ฆ

Jan 14, 2026ย ยท Noun unforeseen (plural unforeseens) An event, incident, cost, etc. that was not foreseen.

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The meaning of UNFORESEEN is not anticipated or expected : not foreseen : unexpected. How to use unforeseen in a sentence.

Unforeseen definition: Not felt or realized beforehand; unexpected.

Something unforeseen is something that could not be predicted and was not expected. It's a surprise.

Definition of unforeseen adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

UNFORESEEN definition: not seen or known beforehand; unanticipated See examples of unforeseen used in a sentence.

Define unforeseen. unforeseen synonyms, unforeseen pronunciation, unforeseen translation, English dictionary definition of unforeseen. adj. Not felt or realized beforehand; unexpected: unforeseen โ€ฆ

UNFORESEEN definition: not seen or known beforehand; unanticipated See examples of unforeseen used in a sentence.

Define unforeseen. unforeseen synonyms, unforeseen pronunciation, unforeseen translation, English dictionary definition of unforeseen. adj. Not felt or realized beforehand; unexpected: unforeseen โ€ฆ

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