freak occurrence

Once-in-a-lifetime event

A freak occurrence is an event so unusual or unexpected that it seems to defy normal patterns: The power outage was a freak occurrence caused by a squirrel in the transformer.

The phrase emphasizes that something happened outside the range of what could reasonably be anticipated—a statistical anomaly, a one-in-a-million event.

Often used to downplay blame or suggest the event couldn't have been prevented.

Related
  • anomalyDeparture from the expected
  • flukeChance stroke of luck
  • miracleSupernatural occurrence beyond explanation
  • act of GodUnforeseeable natural catastrophe
  • glitchMinor system fault

aberration · oddity · twist · twist of fate · lightning · bolt from the blue · coincidence · rarity · once in a blue moon · chance · accident · long shot · phenomenon · strange · bizarre · unexpected · black swan · against all odds

Categories
Opposites
frequency/predictability

freak occurrenceroutine

Regular sequence of actions

standard practice · business as usual · matter of course · the usual · periodicity

normalcy/typicality

freak occurrencenorm

Accepted behavioral standard

normalcy · par for the course · nothing special · status quo

normalcy and typicality

freak occurrencepar for the course

Usual, predictable outcome

business as usual · nothing special · matter of course · textbook case

Family

freak, freaks, freaked, freaking, freakish, freaky, freakishly, occur, occurs

Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G