Top Definition
To assume excessively
She thought I was mad, but she was just being assumptuous.
by Skarmy March 25, 2011
2 more definitions
Something is assumed will be splendid and expensive-looking.
Dude, they're rich. The banquet's will definitely be totally assumptuous!
by AmmaNazi March 11, 2013
to be booty sumptuous
that girl is assumptuous
by Anonymous June 10, 2003

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