certainly is one of those words that makes you sound exponentialy more intellegent that you really are. it is very much like "indeed" in it's usage and effect. Works best if you put the word "well" or "why" in front of it, and if you use "truly?" as a question.
by the will burchfield August 15, 2006
Get the certainlymug. by brendans homie December 24, 2018
Get the Certainly Gaymug. A line said by SpongeBob when he and Patrick were walking by a billboard advertising Barnacle Chips.
by Master Tonberry March 13, 2005
Get the They are most certainly not delicious!mug. by Lee Holland September 20, 2003
Get the why certainly dearmug. 