Top Definition
The parent (usually bipolar) who uses her child for financial gain and manipulation of other unfortunates who may love said child.
ex: Marlee's unmother regularly used her child support to throw kick ass pill poppin parties for her friends while Marlee quietly failed fourth grade.
#mommy dearest #psycho-bitch #custodial parent #tiger mom #un-mother
by Leila Lei November 02, 2013
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