I'm supposing you meant to say "ferocious". An example of a sentence would be "The ferocious lion terrified young children when it roared."
It was fortuitous for me to win the lottery.During my ride to Washington I got in to a car accident, which was ruled fortuitous.
Fortuitous means that some thing happened by chance or luck.It was fortuitous for me to win the prize.
Finding that money on the ground was quite fortuitous. The Tenth Army's Mountain Division got a fortuitous break from the secret development of nylon rope. It was a fortuitous circumstance that the...
It was strictly fortuitous that Vince found his missing class notes. They happened to drop out of his dictionary when it fell to the floor.