perpetuity
C1CEFR level
72/100Rarity: rare
TechnicalRegister
Law noun
An interest in property that is void because it may vest too remotely in the future.
The clause failed for perpetuity, tying up the estate far beyond the permitted period.
Business noun
A stream of identical cash flows assumed to continue indefinitely.
The terminal value was estimated by treating the final year's cash flow as a perpetuity.
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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