propitious
This word is quite formal. You will more likely see it in written reports, literature, or professional speeches than hear it in casual daily conversation. It is most commonly used to describe a situation, a time, or an omen that suggests things will go well. It describes the 'conditions' for success rather than the person succeeding.
💬Casual Conversation
David's stuck in the board room. Seems like a propitious time to sneak out.
I'm down, but I gotta wrap this up first or he'll blow a fuse.
Meanings
Giving or indicating a good chance of success; favorable.
"The sunny weather provided a propitious start to the outdoor wedding ceremony."
(Of a deity) inclined to be favorable; benevolent.
"Ancient sailors offered sacrifices to ensure the gods remained propitious during their voyage."