(of a circumstance) with little chance of success With only a bottle of water and a sandwich, the hikers faced an unpropitious task: ascending a huge mountain that took most two days to climb. à¦ªà§à¦°à¦¤à¦¿à¦à§à¦² unfriendly, adversity, unpropitious, ill-starred, uncongenial à¦à¦¶à§à¦­ Ill, ill-will, unfavourable, unpropitious à¦à¦à¦²à§à¦¯à¦¾à¦£à¦à¦° inauspicious, unpropitious. unfavorable. ill. inauspicious. thunderous. unfavorable. ominous. Definition of Unpropitious not favorable of likely to produce a good result Examples of Unpropitious in a sentence The candidate\\'s unpropitious speak is unlikely to win him any votes. Off to an unpropitious start, it doesn\\'t seem if the business will make enough money to keep its doors open. With unpropitious weather approaching, it is unlikely that we will be able to mow all of the lawns today. My mother-in-law arrived at an unpropitious time and caused a huge argument between my husband and me. The unpropitious decision was made to quickly and will probably with a loss of the investment.