Confused, bewildered, or mentally unclear.
The past participle of 'bemuddle', formed with the '-ed' suffix to create an adjective meaning thoroughly confused or muddled in mind.
The adjective form 'bemuddled' actually survived longer in English than the verb—you can find it in 19th-century literature describing characters with befuddled minds, showing how the same words didn't decline at the same rate.
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