Today's words

deflagrate \DEF-luh-grayt\ - 1. to burn rapidly with intense heat and sparks being given off  2. to cause to burn in such a manner

I was pretty close on this one, which I think I've encountered before.

overweening \oh-ver-WEE-ning\ - 1. arrogant, presumptuous  2. immoderate, exaggerated

I wanted to define this one as if it had an "a" in place of the third "e."