Third-person singular present tense of bemuse; confuses or perplexes someone.
From 'bemuse' with the standard third-person singular '-s' suffix used in modern English verb conjugation.
Unlike most 'be-' verbs in this list, 'bemuses' is actively used today—you might hear 'His behavior bemuses me' in contemporary speech, showing this particular word family survived the standardization that killed the others.
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