Past tense of deactivate
regular verb
The past tense of deactivate is deactivated. The past participle is also deactivated.
Forms of deactivate
| Base form (V1) | deactivate /ˌdiːˈæktɪveɪt/ |
|---|---|
| Past tense (V2) | deactivated |
| Past participle (V3) | deactivated |
| Present participle | deactivating |
| Third person singular | deactivates |
Deactivated in a sentence
- The technician deactivated the alarm system before repairs began.
- The chemical agent was deactivated by exposure to heat.
- In any solution, gas nuclei can be deactivated (crushed) by the application of large hydrostatic pressures.2015, Bruce Wienke, Science of Diving: Concepts and Applications. From the entry denucleation
- The accident airplane's water system had been deactivated, and the bladder cell and plumbing had been removed.2000 August 23, National Transportation Safety Board, “1.6.1.1 747-100 Wing Center Section and Center Wing Fuel Tank Description”, in…. From the entry dry bay
- The consequence of using subnumbers is that you cannot deactivate the main asset until all subnumbers have been deactivated.2020, Kees van Westerop, New Fixed Asset Accounting in SAP S/4HANA, pages 2–16. From the entry subnumber
Meaning of deactivate
- verb To make something inactive or no longer effective.
- verb To prevent the action of a biochemical agent (such as an enzyme).
- verb To remove a person or piece of hardware from active military service.
Questions about the past tense of deactivate
- What is the past tense of deactivate?
- The past tense of deactivate is deactivated.
- What is the past participle of deactivate?
- The past participle of deactivate is deactivated.
- Is deactivate a regular or irregular verb?
- Deactivate is a regular verb: its past tense adds -d.
Source and license
Adapted from Wiktionary: deactivate (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.
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Cite this page: “Past tense of deactivate.” Word.ws, https://word.ws/past-tense/deactivate. Based on Wiktionary, CC BY-SA 4.0.