[adjective] [formal] - (of something that is to your advantage) not planned, happening by chance, or (not standard) fortunateThe extraordinarily convenient timing of the meeting is said to be fortuitous.The collapse of its rivals brought fortuitous gains to the company.The surpluses have not disappeared but have been hidden by fortuitous circumstances.Accepting the job was a fortuitous (= good) move and her career blossomed.
FORTUITOUS
Meaning of FORTUITOUS in English
Cambridge English vocab. Кембриджский английский словарь. 2012