Defention is the act of defending yourself against someone else defending themselves. Such as someone hitting you in defense and you hit them back in defention.
I defended myself against her defention.
by Strigger January 17, 2012
Get the Defention mug.
without doubt (used for emphasis).

synonyms: definitely, certainly, Surely, for sure, unquestionably, without doubt, without question, undoubtedly, indubitably, positively, absolutely; undeniably, unmistakably, plainly, clearly, obviously, patently, palpably, transparently, unequivocally

¯\_(ツ)_/¯
by Defently not, March 2, 2018
Get the Defently mug.
This is how a retard spells definitely.
I defentally should go back to school to take English class because I'm a failure.
by Willow Killmeister November 26, 2014
Get the Defentally mug.