Require
Require verb - To have as a requirement.
Warn
Warn verb - To give notice to beforehand especially of danger or risk.
Mutual synonyms
Common collocations
Both words in one sentence
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Similarly, the Nightmare Forces send Rarity a nightmare in an attempt to warn her about the main villain's plans, as they require living beings to plague with nightmares.
Source: Evil Versus Oblivion -
Mark and Kyle visit her before the attack begins to warn her of whats going to happen and urge her to leave, but she opts to stay and help all that require her help.
Source: Literature / The Impairment - Each of the sages on planet Tenrei can make one type, and they warn that they require so much mana to use that they'll convert some of your life force into mana to pull off their effects.
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Cite this Source
Warn and Require. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/require/warn
Require & Warn. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/require/warn>.
Warn or Require. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/require/warn.
Google Ngram Viewer shows how "require" and "warn" have occurred on timeline