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

haply \hap"ly\ ha^p"ly^, adv.
   by hap, chance, luck, or accident; perhaps; it may be.
   1913 webster

         lest haply ye be found even to fight against god.
                                                  --acts v. 39.
   1913 webster

[2] : WordNet (r) 2.0

haply
     adv : by accident; "betrayed by a word haply overheard" syn: by
           chance, by luck
see also:
by chance by luck 

Haply >> H Words
Haply, definition of term: Haply
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