Happening by chance; coming or occuring unexpectedly, or without any known cause; chance; as, the fortuitous concourse of atoms.
Happening independently of human will or means of foresight; resulting from unavoidable physical causes.
Coming by good luck or favorable chance; bringing some good thing not foreseen as certain; presaging happiness; auspicious; as, a fortunate event; a fortunate concurrence of circumstances; a fortunate investment.
Receiving same unforeseen or unexpected good, or some good which was not dependent on one’s own skill or efforts; favored with good forune; lucky.