MEANING
Install new equipment or improvements in something already built.
Use it for
Words that belong together
- retrofit a building
- retrofit insulation
On the page
The school retrofitted insulation around the original windows.
Word forms
- Base
- retrofit
- Past tense
- retrofitted
- Past participle
- retrofitted
- Present participle
- retrofitting
Full tense & aspect guide
- Present
- retrofit
- Present continuous
- am/is/are retrofitting
- Present perfect
- have/has retrofitted
- Present perfect continuous
- have/has been retrofitting
- Past
- retrofitted
- Past continuous
- was/were retrofitting
- Past perfect
- had retrofitted
- Past perfect continuous
- had been retrofitting
- Future
- will retrofit
- Future continuous
- will be retrofitting
- Future perfect
- will have retrofitted
- Future perfect continuous
- will have been retrofitting
Choose the auxiliary that agrees with your subject. These are constructions of one word, not separate entries.
Usage notes
Primary category: academic / formal. Forms: retrofit; retrofits; retrofitted; retrofitted; retrofitting Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: analysis, explanation, evaluation. Commonness: uncommon. Third-person singular: retrofits.
Practice this word in a sentenceYour margin notes
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