[f. as prec. + -ER1.] One who or that which estranges, parts asunder, or causes estrangement.

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1623.  Drumm. of Hawth., Cypress Grove, Wks. (1711), 117. Death is the violent Estranger of Acquaintance.

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1850.  Mrs. Browning, Poems, I. 130. What estranger, What ill most strong in evil, can be thrust Between the faithful Father and the Son.

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