Top Definition
A malaprop combining the words addendum and amendment.
WTF, Mike just said "addendment" - is that even a word? Moar beer plz.
by ehhhh87132 June 05, 2009
A combination addendum and amendment added to a bill during the Bush Administration
We would like the DOMA to become an addendment to the constitution
by DR=rewlng505 July 07, 2012
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