pro·pi·tious 
(prə-pĭshəs)
(prə-pĭshəs)adj.
1. Presenting favorable circumstances or showing signs of a favorable outcome; auspicious: "Grandmothers consulted almanacs to determine a propitious hour for the betrothal" (Jhumpa Lahiri).
2. Merciful or kindly: a propitious deity.
[Middle English propicius, from Old French propicieux, from Latin propitius; see pet- in the Appendix of Indo-European roots.]
pro·pitious·ly adv.
pro·pitious·ness n.
- under/in the circumstances
- underived
- underkill
- underlaid
- underlain
- underlay
- underlay
- underlayment
- underlet
- underlie
- underline
- underling
- underlining
- underlip
- under lock and key
- underlying
- undermine
- undermodulate
- undermodulation
- undermost
- underneath
- under no circumstances
- under nose
- undernourish
- undernourishment