effectiveness
A2CEFR level
10/100Rarity: common
TechnicalRegister
The principle that national rules must not render the exercise of Union rights practically impossible or excessively difficult.
The short limitation period offended the principle of effectiveness.
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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