He famously avoided flowery or complex Latinate words, preferring short, "homely" words like blood , toil , tears , and sweat to create a visceral impact.
Churchill never "mumbled" into a speech; he began with immediate, arresting statements to grab attention. Churchill: The Power of Words
Despite his broad vocabulary, Churchill centered every address on a single, powerful objective—such as "Victory" at all costs. He famously avoided flowery or complex Latinate words,