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English Lexicon

Sudden-onset

/ˈsʌd.ən ˈɒn.sɛt/
adjectiveCEFR C1 (Advanced)Top #14500 frequency
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Comprehensive Definitions & Senses

2 senses
As adjective
  1. 1

    Characterized by beginning rapidly and abruptly without a prolonged preliminary phase.

    "The patient experienced a sudden-onset fever that required immediate hospitalization."
  2. 2

    Pertaining to phenomena, such as natural disasters or economic crises, that materialize instantly.

    "Emergency services prepared for sudden-onset flooding following the heavy cloudburst."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Formed in English by combining the adjective 'sudden' (derived from Old French 'sodain', from Latin 'subitanus') with the noun 'onset' (from 'on' + 'set'). Emerging prominently in medical and technical literature during the 20th century, it describes conditions or events that manifest abruptly and without significant warning.

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