fortuitous

/fȯr-ˈtü-ə-təs/

Latin fortuitus; akin to Latin fort-, fors chance

adjective

  1. occurring by chance

  2. fortunate, lucky

  3. coming or happening by a lucky chance

accidental fortuitous casual contingent mean not amenable to planning or prediction. accidental stresses chance. fortuitous so strongly suggests chance that it often connotes entire absence of cause.