Third-person singular present tense: confuses or perplexes someone greatly.
Standard conjugation of 'bewilder,' from 'be-' (to cause to be) + 'wilder' (from Old Norse 'villr,' wild or astray). The verb form captures the action of causing confusion in real time.
The verb 'bewilder' became so common that most modern speakers forget it contains the 'be-' prefix at all—we process it as a single unit meaning 'to confuse.' This shows how productive prefixes eventually become invisible when they create words that supersede their components.
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