When the timing of something is propitious, it's likely to turn out well. A propitious time for taking a big test is when you've studied hard and had a good night's sleep.

If you believe in astrology, you might check your horoscope to settle on a propitious day for your wedding. A propitious moment to ask your parents about that spring break trip to Cancun might be when you've just unveiled your straight-A report card.

Definitions of propitious

adj presenting favorable circumstances; likely to result in or show signs of success

propitious omens”
propitious gales speeded us along”
“a propitious alignment of planets for space exploration”
auguring favorable circumstances and good luck
favorable, favourable, golden, lucky, prosperous
presaging or likely to bring good luck
disposed to bestow favors
favorable, favourable
(of winds or weather) tending to promote or facilitate
not propitious
ill, inauspicious, ominous
presaging ill fortune
extremely ominous
unfavorable, unfavourable
(of winds or weather) tending to hinder or oppose
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