1590s, "of good omen" (implied in auspiciously), from Latin auspicium "divination by observing the flight of birds," from auspex (genitive auspicis) + -ous. Related: Auspiciousness.
an auspicious beginning for the campaign
*aus-
auscultate
auscultation
auspex
auspices
auspicious
Aussie
auster
austere
austerity
Austin
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