strengthen
verb (used with object)
to make stronger; give strength to.
has been strengthening
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present perfect progressiveof strengthen (3rd person singular).present perfect progressive
Used to describe an action that began in the past, has continued continuously, and is still in progress.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
As Microsoft’s control over OpenAI lessens, OpenAI has been strengthening its relationship with Amazon.
From MarketWatch ● Apr. 13, 2026
In recent times, Rheinmetall has been strengthening its presence in the eastern flank of the North Atlantic Treaty Organization, as local demand for weapons and artillery rapidly increases.
From The Wall Street Journal ● Nov. 3, 2025
The state has been strengthening its laws to protect Indigenous cultural heritage since iron ore mining operations by Rio Tinto three years ago destroyed historic rock shelters that showed human habitation dating back 46,000 years.
From Reuters ● May 25, 2023
In the face of the increasing North Korean nuclear threat, South Korea has been strengthening its missile defenses while also developing preemptive attack plans.
From Seattle Times ● Oct. 10, 2022
All the past two summers it has been strengthening and nourishing my sick body and soul, as never before.
From Complete Prose Works Specimen Days and Collect, November Boughs and Goodbye My Fancy by Walt Whitman
