blocker
B1CEFR level
25/100Rarity: fairly common
TechnicalRegister
An issue that completely prevents a task from progressing until it is removed.
The missing test credentials were a blocker, so the whole story sat untouched for two days.
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.
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