Synonyms of the word

unpropitious

• adj. not propitious; unfavourable, untimely.

ill

• adj. (obsolete) Evil; wicked (of people).
• adj. (archaic) Morally reprehensible (of behaviour etc.); blameworthy.
• adj. Indicative of unkind or malevolent intentions; harsh, cruel.
• adj. Unpropitious, unkind, faulty, not up to reasonable standard.
• adj. Unwell in terms of health or physical condition; sick.
• adj. Having an urge to vomit.
• adj. (hip-hop slang) Sublime, with the connotation of being so in a singularly creative way.
• adj. (slang) Extremely bad (bad enough to make one ill). Generally used indirectly with to be.
• adv. Not well; imperfectly, badly; hardly.
• n. (often pluralized) Trouble; distress; misfortune; adversity.
• n. Harm or injury.
• n. Evil; moral wrongfulness.
• n. A physical ailment; an illness.
• n. (US, slang) PCP, phencyclidine.

inauspicious

• adj. Not auspicious; ill-omened; unfortunate; unlucky; unfavorable.

ominous

• adj. Of or pertaining to an omen or to omens; being or exhibiting an omen; significant.
• adj. Specifically, giving indication of a coming ill; being an evil omen; threatening; portentous; inauspicious.

thunderous

• adj. Very loud; that sounds like thunder; thundersome.

unfavorable

• adj. Disadvantageous, adverse, unsuitable, inconducive; serving to hinder or oppose.
• adj. (of a belief, state of mind, etc) Not favorable, disapproving.
• adj. (of wind or weather) Causing obstacles or delay; not conducive to travel or work; inclement.
• adj. Not auspicious; ill-boding.

unfavourable

• adj. not approved of.
• adj. (of wind or weather) opposing or hindering.