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strengthen

verbattested in dialogue

  • //ˈstɹɛŋ(k)θən//
  • //ˈstɹɛnθən//
  • /[ˈstɹeɪŋ(k)θən]/

To make strong or stronger; to add strength to; to increase the strength of; to fortify.

verb

  1. 1

    To make strong or stronger; to add strength to; to increase the strength of; to fortify.

    strengthen a muscle

    strengthen a wall

    strengthen one's willpower

    strengthen one's authority

  2. 2

    To empower; to give moral strength to; to encourage; to enhearten.

    Charge Joshua, and encourage him, and strengthen him.

    my father and mother strengthened me in this my first impression, saying in my presence, I was intended for some great purpose

    "A fine man, that Dunwody, yonder," commented the young captain, as they parted, and as he turned to his prisoner. "We'll see him on in Washington some day. He is strengthening his forces now against Mr. Benton out there.[…]."

    A review of addiction research, published in Trends in Cognitive Sciences, suggests mindful meditation strengthens self-control in smokers, even among those smokers who haven’t set an intention to quit.

  3. 3

    To augment; to improve; to intensify.

  4. 4

    To reinforce, to add to, to support (someone or something)

    strengthen an army

    Each half-section of the battery weighs about eight tons, and the two underframes had to be strengthened to take this weight.

    In 2019, Trump signed the Fostering Undergraduate Talent by Unlocking Resources for Education (FUTURE) Act, a bipartisan bill aimed at strengthening HBCUs as well as other minority-serving institutions by providing $255 million annually.

    A priority for the new pope will be to strengthen the church’s unity amid differing views and expectations within the institution and growing polarisation in the wider world.

  5. 5

    To substantiate; to corroborate (a belief, argument, etc.)

    strengthen the cause

  6. 6

    To grow strong or stronger.

    my affection seems so superfluous that I often wonder why it should be so strong. But wise or foolish, there it is, strengthening with the years whether I will or no

Etymology

From rare Middle English strengthenen (14th c.), from earlier strengthen (12th c.), where -en is the infinitive ending. Probably the original form was reinterpreted as strength + -en around the time when the infinitive ending was being apocopated in late Middle English.

Forms

past tense
strengthened
past participle
strengthened
present participle
strengthening
third person singular
strengthens
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).