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retroactive

[re-troh-ak-tiv] /ˌrɛ troʊˈæk tɪv/
adjective
1.
operative with respect to past occurrences, as a statute; retrospective:
a retroactive law.
2.
pertaining to a pay raise effective as of a past date.
Origin
1605-1615
1605-15; retro- + active
Related forms
retroactively, adverb
retroactivity, noun
nonretroactive, adjective
nonretroactively, adverb
nonretroactivity, noun
unretroactive, adjective
unretroactively, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for retroactive
  • retroactive application after years of welcoming foreign participation decreases future predictability.
  • No retroactive credit for hotel stays prior to promotion registration date.
British Dictionary definitions for retroactive

retroactive

/ˌrɛtrəʊˈæktɪv/
adjective
1.
applying or referring to the past retroactive legislation
2.
effective or operative from a date or for a period in the past
Derived Forms
retroactively, adverb
retroactiveness, retroactivity, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for retroactive
retroactive
1611, from Fr. rétroactif (fem. rétroactive) "casting or relating back," from L. retroactus, pp. of retroagere "drive or turn back," from retro- "back" + agere "to drive, set in motion" (see act).
Online Etymology Dictionary, © 2010 Douglas Harper
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Word Value for retroactive

16
18
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