[1] : The Collaborative International Dictionary of English v.0.48

intentionally \inten"tionally\, adv.
   in an intentional manner; with intention; by design; of
   purpose.
   1913 webster

[2] : WordNet (r) 2.0

intentionally
     adv : with intention; in an intentional manner; "he used that word
           intentionally"; "i did this by choice" syn: deliberately,
            designedly, on purpose, purposely, advisedly,
           by choice, by design ant: by chance, unintentionally,
            unintentionally
see also:
deliberately designedly on purpose purposely advisedly by choice 
by design by chance unintentionally 

[3] : Moby Thesaurus II by Grady Ward, 1.0

23 moby thesaurus words for "intentionally":
   advisedly, by design, calculatedly, consciously, contemplatedly,
   deliberately, designedly, in cold blood, knowingly, meditatedly,
   on purpose, pointedly, premeditatedly, purposefully, purposely,
   purposively, voluntarily, willfully, with full intent, with intent,
   with malice aforethought, with purpose, wittingly

Intentionally >> I Words
Intentionally, definition of term: Intentionally
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