fortuitous

Adjective Satellite

• having no cause or apparent cause
  • "fortuitous encounters--strange accidents of fortune"
• occurring by happy chance
  • "profits were enhanced by a fortuitous drop in the cost of raw materials"

Adj

• Happening by chance; coincidental, accidental.
• Happening by a lucky chance; lucky or fortunate.
• Happening independently of human will.

Synonyms

causeless, uncaused, accidental, accidentary, adventitious, by accident, by the by, casual, chanceable, fortuitous, fortunate, freak, happy, incidental, lippening, lucky, occasional, providential, random, serendipitous, sonsy, unforeseen, unintended, unintentional, unplanned