bluebird
A2CEFR level
35/100Rarity: fairly common
TechnicalRegister
An unexpected, effortless deal that lands without any real selling.
Don't build the forecast on bluebirds; that inbound whale was pure luck.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
Get words like bluebird on your lock screen, a few a day, with review that makes them stick.
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