1. not auspicious; boding ill • Syn: unfortunate • Ant: auspicious • Similar to: unpromising • Derivationally related forms: inauspiciousness • Attrubites: auspiciousness, propitiousness 2. presaging ill fortune - ill omens - ill predictions - "my words with inauspicious thunderings shook heaven"- P.B.Shelley - a dead and ominous silence prevailed - a by-election at a time highly unpropitious for the Government • Syn: ill, ominous • Similar to: unpropitious • Derivationally related forms: omen (for: ominous), inauspiciousness 3. contrary to your interests or welfare - adverse circumstances - made a place for themselves under the most untoward conditions • Syn: adverse, untoward • Similar to: unfavorable, unfavourable • Derivationally related forms: inauspiciousness, adversity (for: adverse)