1. a person who alienates or estranges others; one who causes alienation
Usage: rare; formal
2. in law, a person who transfers property or rights to another; one who alienates property
Usage: legal; archaic

Examples

• The aliener of the estate signed the deed transferring ownership to the new buyer.
• His critical remarks made him an aliener of his former friends.
• In property law, the aliener must provide clear title to the alienee.
• She became an aliener of her own family through years of neglect and distance.