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Without doubt; 100% sure.

Ok, this is the best word in the english language. Just say it and it gets plastered into the back of your brain and you're hooked on this one word. Saying it over, and over, and over, and over. I love it.

In-Dub-It-Ab-Ly.
by mike indubitably February 07, 2004
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2
A 'posh' way of saying "Without a doubt" or fo' shizzle my nizzle.
man1: Gosh, a jolly good bash this, what?
man2: indubitably
by testic April 15, 2004
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It's a rain forest of syllables in and around my mouth.
Jack - "Have you ever tried to say they word indubitably before?"

Sam - "Hell yeah, that shit is indubitably hard to say."

Jack - "Word."
by SpaZ21 May 16, 2010
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"Indubitably"
It's only the greatest word this side of the galaxy.
by Ham_ January 05, 2016
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A word created and abused by two people to describe things that are certain. (Most commonly spoken with a Brittish accent) Sometimes accompanied with "indeed".
That baseball must have been hit a quarter mile....
Indubitably....
Indeed....
by BaseBaller69 March 16, 2010
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The meaning of this word is undoubtedly, unquestionably, in a matter to remove all doubt.
EXAMPLE SENTENCE: I am indubitably certain that the concert is tonight at 7:00.
by rocky 123 November 04, 2008
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