rare occurrence
Once in awhile
Something that happens infrequently or seldom.
The phrase emphasizes how unusual an event is: Snow in April is a rare occurrence here, Seeing him smile was a rare occurrence.
Often used to highlight something's exceptional nature, whether positive or negative.
- anomalyDeparture from the expected
- black swanDark-feathered Australian waterfowl
- freakAbnormal deviation from typical
- freak accidentRare, unpredictable calamity
- miracleSupernatural occurrence beyond explanation
unicorn · hen's teeth · phenomenon · oddity · fluke · happy accident · once-in-a-lifetime · once in a blue moon · eclipse · total eclipse · comet · shooting star · lightning · extraordinary · exceptional · one in a million · scarce · unusual
rare occurrencenormality
State of being typical
standard practice · matter of course · business as usual · par for the course · status quo
rare occurrenceroutine
Regular sequence of actions
matter of course · standard fare · regularity · banality · foregone conclusion
rare, rarer, rarest, rarely, rareness, rarity, rarefied, rarefy, rarefaction