Past tense of strengthen
regular verb
The past tense of strengthen is strengthened. The past participle is also strengthened.
Forms of strengthen
| Base form (V1) | strengthen /ˈstɹɛŋ(k)θən/ |
|---|---|
| Past tense (V2) | strengthened /ˈstɹɛŋθənd/ |
| Past participle (V3) | strengthened /ˈstɹɛŋθənd/ |
| Present participle | strengthening /ˈstɹɛŋ(k)θənɪŋ/ |
| Third person singular | strengthens |
Strengthened in a sentence
- The viaduct is joined to the embankment by retaining walls, which have been strengthened since they were constructed by the addition of stay bolts extending right through the embankment and fastened outside each retaining wall.1952 July, W. R. Watson, “Sankey Viaduct and Embankment”, in Railway Magazine, page 487
- Each half-section of the battery weighs about eight tons, and the two underframes had to be strengthened to take this weight.1958 June, “First Battery Railcars on B.R.”, in Railway Magazine, page 419
- His commitment to remaining a flat-earther seems to be strengthened by counterarguments rather than weakened by them.From the entry flat-earther
- The neo-liberal reforms after the fall of the Soeharto regime in Indonesia sustainedly strengthened the big business groups.From the entry sustainedly
- True babbits are tin-base alloys strengthened by the presence of antimony and copper, and occasionally containing lead.2012, David F. Tver, Encyclopedic Dictionary of Industrial Technology. From the entry babbit
Meaning of strengthen
- verb To make strong or stronger; to add strength to; to increase the strength of; to fortify.
- verb To empower; to give moral strength to; to encourage; to enhearten.
- verb To augment; to improve; to intensify.
Questions about the past tense of strengthen
- What is the past tense of strengthen?
- The past tense of strengthen is strengthened.
- What is the past participle of strengthen?
- The past participle of strengthen is strengthened.
- Is strengthen a regular or irregular verb?
- Strengthen is a regular verb: its past tense adds -ed.
Source and license
Adapted from Wiktionary: strengthen (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 strengthen.” Word.ws, https://word.ws/past-tense/strengthen. Based on Wiktionary, CC BY-SA 4.0.