A person confined in a prison, hospital, or other institution. Originally referred to any person living in the same dwelling as others.
From 'in' + 'mate' (companion), originally meaning simply 'someone who lives in the same place.' The term narrowed to institutional confinement in the 19th century as prisons and asylums became more systematized.
The word 'inmate' originally had no negative connotations - it simply meant housemate or fellow resident. The shift to primarily describing prisoners reflects how language can be shaped by social institutions and acquire stigma through association with specific contexts.
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