mirror image rule
C2CEFR level
78/100Rarity: rare
TechnicalRegister
The requirement that an acceptance correspond exactly to the terms of the offer for a contract to be formed.
Because the buyer's reply added a delivery condition, the mirror image rule meant it operated as a counteroffer rather than an acceptance.
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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