Propitious – adjective

• Likely to result in success, or showing signs of success (Cambridge)
• Favorably disposed: benevolent (Merriam-Webster)
• Being a good omen: auspicious (Merriam-Webster)
• Tending to favor: advantageous (Merriam-Webster)
• Presenting favorable conditions; favorable (Dictionary.com)
• Favorably inclined; disposed to bestow favors or forgive (Dictionary.com)

“Propitious, which comes to us through Middle English from the Latin word propitius (same meaning as ‘propitious’), is a synonym of ‘favorable’ and ‘auspicious.’ All three essentially mean ‘pointing toward a happy outcome,’ with some differences of emphasis. ‘Favorable’ implies that the persons involved in a situation are approving or helpful, or that circumstances are advantageous (‘favorable weather conditions’). ‘Auspicious’ usually applies to a sign or omen that promises success before or at the start of an event (‘an auspicious beginning’). ‘Propitious’ may also apply to beginnings, but it often suggests a continuing promising condition (‘propitious conditions for an alliance’).” – Merriam-Webster