sanity check
B1CEFR level
35/100Rarity: fairly common
TechnicalRegister
A quick, rough verification that a result is plausible before trusting or acting on it.
Run a sanity check on that number; 200% conversion clearly means the tracking is double-firing.
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 sanity check on your lock screen, a few a day, with review that makes them stick.
Download on the App Store Lexfall puts a new word on your home and lock screen through widgets, so you learn without opening an app. Free to download. After a free trial, a subscription unlocks every field. Built for iPhone, iOS 15.1 or later.
On a computer?Scan with your iPhone camera.