A misspelling or archaic variant of embarrassed; feeling self-conscious or ashamed.
This appears to be a historical variant or misspelling of 'embarrassed,' which comes from French 'embarasser' + English '-ed' suffix. The double 'r' and double 's' in 'embarrass' are notoriously difficult for spellers.
The spelling of 'embarrassed' with its double-r and double-s is one of English's most famously difficult words—many people struggle because it doesn't follow normal patterns, and historical texts show 'embarrased' as a common alternative spelling.
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