DICT.TW Dictionary Taiwan

 For·tu·i·tous a.
 1. Happening by chance; coming or occuring unexpectedly, or without any known cause; chance; as, the fortuitous concourse of atoms.
    It was from causes seemingly fortuitous . . . that all the mighty effects of the Reformation flowed.   --Robertson.
    So as to throw a glancing and fortuitous light upon the whole.   --Hazlitt.
 2. LAw Happening independently of human will or means of foresight; resulting from unavoidable physical causes.
 Syn: -- Accidental; casual; contingent; incidental. See Accidental.
 -- For*tu*i*tous*ly, adv. -- For*tu*i*tous*ness, n.
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 fortuitousness
      n : the quality of happening accidentally and by lucky chance