auspicious

English

From auspice +‎ -ious, from Latin auspicium (“augury”), from auspex (“augur”), possibly via French.

auspicious (comparative more auspicious, superlative most auspicious)

Of good omen; indicating future success.
Conducive to success.
Synonyms: favourable, favorable, promising, propitious, fortunate, lucky
This is an auspicious day.
Marked by success; prosperous.
Synonyms: lucky, fortunate
- c. 1599–1602, William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies: Published According to the True Originall Copies (First Folio), London: Printed by Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358, [Act I, scene ii], lines 8–14, page 153, column 2:
  Therefore our ſometimes Siſter, now our Queen, / Th’ imperiall Ioyntreſſe of this warlike State, / Haue we, as ’twere, with a defeated ioy, / With one Auſpicious, and one Dropping eye, / With mirth in Funerall, and with Dirge in Marriage, / In equall Scale weighing Delight and Dole / Taken to Wife […]

indicating future success

Belarusian: спрыя́льны (spryjálʹny)
Catalan: propici m, propícia f, favorable (ca) m or f
Chinese:
Mandarin: 吉利 (zh) (jílì), 吉祥 (zh) (jíxiáng)
Czech: slibný m, nadějný (cs) m, příznivý (cs) m
Dutch: gunstig (nl)
Finnish: lupaava (fi)
French: propice (fr), faste (fr), de bon augure
German: günstig (de), vielversprechend (de), verheißungsvoll (de), glückverheißend
Greek: ευοίωνος (el) (evoíonos)
Ancient: αἴσιος (aísios)
Hindi: शुभ (hi) (śubh)
Irish: dea-thuarúil