Nominal Forms
Infinitive: to retrofit
Participle: retrofitted
Gerund: retrofitting
Cognates
-
Indicative
Present
| I | retrofit |
| you | retrofit |
| he;she;it | retrofits |
| we | retrofit |
| you | retrofit |
| they | retrofit |
Perfect
| I | have retrofitted |
| you | have retrofitted |
| he;she;it | has retrofitted |
| we | have retrofitted |
| you | have retrofitted |
| they | have retrofitted |
Past
| I | retrofitted |
| you | retrofitted |
| he;she;it | retrofitted |
| we | retrofitted |
| you | retrofitted |
| they | retrofitted |
Pluperfect
| I | had retrofitted |
| you | had retrofitted |
| he;she;it | had retrofitted |
| we | had retrofitted |
| you | had retrofitted |
| they | had retrofitted |
Future
| I | will retrofit |
| you | will retrofit |
| he;she;it | will retrofit |
| we | will retrofit |
| you | will retrofit |
| they | will retrofit |
Future Perfect
| I | will have retrofitted |
| you | will have retrofitted |
| he;she;it | will have retrofitted |
| we | will have retrofitted |
| you | will have retrofitted |
| they | will have retrofitted |
Subjunctive
Present
| I | retrofit |
| you | retrofit |
| he;she;it | retrofit |
| we | retrofit |
| you | retrofit |
| they | retrofit |
Perfect
| I | have retrofitted |
| you | have retrofitted |
| he;she;it | have retrofitted |
| we | have retrofitted |
| you | have retrofitted |
| they | have retrofitted |
Imperfect
| I | retrofitted |
| you | retrofitted |
| he;she;it | retrofitted |
| we | retrofitted |
| you | retrofitted |
| they | retrofitted |
Pluperfect
| I | had retrofitted |
| you | had retrofitted |
| he;she;it | had retrofitted |
| we | had retrofitted |
| you | had retrofitted |
| they | had retrofitted |
Conditional
Present
| I | would retrofit |
| you | would retrofit |
| he;she;it | would retrofit |
| we | would retrofit |
| you | would retrofit |
| they | would retrofit |
Perfect
| I | would have retrofitted |
| you | would have retrofitted |
| he;she;it | would have retrofitted |
| we | would have retrofitted |
| you | would have retrofitted |
| they | would have retrofitted |
Imperative
| you | retrofit |
| we | Let's retrofit |
| you | retrofit |
Verbs conjugated like 'retrofit'
abet,
abhor,
abut,
acquit,
admit,
affrap,
allot,
alum,
amel,
amit,
anagram,
anvil,
apparel,
aret,
arret,
assot,
astun,
attrap,
augur,
avel, etc. (List truncated at 20 verbs)
Verbs similar to 'retrofit'
retroact,
retrodict,
retrofire,
autofit,
intromit,
profit,
recraft,
recredit,
recruit,
redraft,
Synonyms & Antonyms
Additional Information
Phrasal Verbs
Etymology
1. The verb is derived from retro- (prefix meaning ‘back; backward’) + fit (“to equip, supply”).
2. The noun, which is first attested later than the verb, is either derived:
3. * from the verb (see above); or
4. * from retro- + fit (“act of fitting; conformity of elements one to another”).
Sample Sentences
-
Trams dating from 2012 have been retro-fitted with lithium batteries, with the conversions starting in 2018. [2020 January 2, Richard Clinnick, “Midlands Metro Welcomes New Catenary-free Trams”, in Rail, Peterborough, Cambridgeshire: Bauer Media, →ISSN, →OCLC, page 16:]
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The project involves retrofitting Google’s Pixel smartphones to certain subway cars to collect sounds and other data and feed it into Google’s Cloud. […] When asked why the devices were retrofitted on older models instead of newer ones, Sarno said the MTA typically uses older car models when making modifications in case there are any unwanted effects. [2025 March 9, Nic F. Anderson, “Tired of subway delays? The MTA wants to fix that by strapping Google smartphones to New York trains”, in CNN:]
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The bug was so bad that we had to retrofit our patch to the last three releases, as well as the newest release.