Showing off with words

As part of our job JD and I have regular recourse to the dictionary, and while checking spellings and meanings we sometime discover obscure words for simple things. Here are a few examples that we found amusing; why not try them out on family and friends?

Absquatulate: "leave abruptly". Eg (possibly during a heated argument): "If I were you'd I'd absquatulate before I lose my temper."
Adumbrate: "give a general idea". Eg (possibly in reply to a tough question): "I have no idea, but I could adumbrate for you."
Adventitious: "happening according to chance". Eg (possibly when accused of breaking an expensive vase): "I do assure you it was entirely adventitious."
Aleatoric: "random". Eg (possibly when accused of dealing cards from the bottom of the pack): "My choice of four aces was completely aleotoric."

Are these words genuine? That, I assure you, is apodictic*; watch this space for more show-off words.

*Apodictic: "beyond dispute".