retroact
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ret·ro·ac·tion
(rĕt′rō-ăk′shən)n.
1. Application of a subsequent rule or condition to something that occurred at a previous time.
2. An opposing or reciprocal action; a reaction.
ret′ro·act′ v.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
retroact
(ˈrɛtrəʊˌækt)vb (intr)
1. to act in opposition
2. to influence or have reference to past events
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ret•ro•act
(ˈrɛ troʊˌækt)v.i.
1. to act in opposition; react.
2. to have reference to or influence on past occurrences.
[1785–1795]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
retroact
Past participle: retroacted
Gerund: retroacting
| Imperative |
|---|
| retroact |
| retroact |
| Present |
|---|
| I retroact |
| you retroact |
| he/she/it retroacts |
| we retroact |
| you retroact |
| they retroact |
| Preterite |
|---|
| I retroacted |
| you retroacted |
| he/she/it retroacted |
| we retroacted |
| you retroacted |
| they retroacted |
| Present Continuous |
|---|
| I am retroacting |
| you are retroacting |
| he/she/it is retroacting |
| we are retroacting |
| you are retroacting |
| they are retroacting |
| Present Perfect |
|---|
| I have retroacted |
| you have retroacted |
| he/she/it has retroacted |
| we have retroacted |
| you have retroacted |
| they have retroacted |
| Past Continuous |
|---|
| I was retroacting |
| you were retroacting |
| he/she/it was retroacting |
| we were retroacting |
| you were retroacting |
| they were retroacting |
| Past Perfect |
|---|
| I had retroacted |
| you had retroacted |
| he/she/it had retroacted |
| we had retroacted |
| you had retroacted |
| they had retroacted |
| Future |
|---|
| I will retroact |
| you will retroact |
| he/she/it will retroact |
| we will retroact |
| you will retroact |
| they will retroact |
| Future Perfect |
|---|
| I will have retroacted |
| you will have retroacted |
| he/she/it will have retroacted |
| we will have retroacted |
| you will have retroacted |
| they will have retroacted |
| Future Continuous |
|---|
| I will be retroacting |
| you will be retroacting |
| he/she/it will be retroacting |
| we will be retroacting |
| you will be retroacting |
| they will be retroacting |
| Present Perfect Continuous |
|---|
| I have been retroacting |
| you have been retroacting |
| he/she/it has been retroacting |
| we have been retroacting |
| you have been retroacting |
| they have been retroacting |
| Future Perfect Continuous |
|---|
| I will have been retroacting |
| you will have been retroacting |
| he/she/it will have been retroacting |
| we will have been retroacting |
| you will have been retroacting |
| they will have been retroacting |
| Past Perfect Continuous |
|---|
| I had been retroacting |
| you had been retroacting |
| he/she/it had been retroacting |
| we had been retroacting |
| you had been retroacting |
| they had been retroacting |
| Conditional |
|---|
| I would retroact |
| you would retroact |
| he/she/it would retroact |
| we would retroact |
| you would retroact |
| they would retroact |
| Past Conditional |
|---|
| I would have retroacted |
| you would have retroacted |
| he/she/it would have retroacted |
| we would have retroacted |
| you would have retroacted |
| they would have retroacted |
Collins English Verb Tables © HarperCollins Publishers 2011