Part of speech:
Damaging or harmful:
Served without milk or cream:
The definition of adverse is unfavorable or acting against a person, goal or circumstance.
Likely to be a hindrance; disadvantageous:
Making or implying threats:
Containing errors or alterations, especially ones that prevent proper understanding or use:
The definition of deleterious is something that is harmful or damaging.
The definition of fortunate is someone or something that is lucky or favorable, or someone who is materially well-off.
Evil or immoral:
Apocalyptic is defined as something that refers to the Book of Revelation.
Harmful or malignant in intent or effect:
Deserving to be despised; contemptible
Of or like a devil; wicked; cruel; diabolic
Of, concerning, or characteristic of the devil; satanic.
The definition of dire is something so bad or scary that it causes distress or terror.
Extremely bad; terrible:
Disposed to lie, cheat, defraud, or deceive.
Tending or threatening to impede progress:
Grim is defined as stern or unmoving.
Located on the left side of a person facing downstream:
Having, showing, or caused by malice; spiteful; intentionally mischievous or harmful
Showing ill will; malicious
Of or serving as an omen; esp., having the character of an evil omen; threatening; sinister
Dishonest and sneaky; underhanded.
Able to be depended on for the discharge of obligations incurred; of unimpaired credit.
Knowing no evil
1822, T. Creevey, Reminiscences, 28 Jul:
(Obsolete) Auspicious; favorable.
Strongly suggestive of great harm, menace, or evil
Of a menacing or threatening nature; minatory.
Conveying or constituting a threat
Characterized by foreboding
The definition of malignant is something evil or intending harm, a tumor that is spreading, or a disease that is invasive.
Causing or capable of causing harm; injurious.
Portending harm; ominous.
The definition of obnoxious is someone or something that is very annoying or offensive.
Pitiful; wretched; miserable
The definition of pernicious is deadly or very destructive.
Inclined to annoy or vex with playful tricks; naughty
Contrary to what is right or good; wicked or depraved:
- Malign is applied to that which is regarded as having an inherent tendency toward evil or destruction a malign doctrine
- Baleful refers to that which is menacing to the degree of being deadly, destructive, pernicious, etc. a baleful influence
- Sinister applies to that which can be interpreted as presaging imminent danger or evil a sinister smile
Find another word for sinister. In this page you can discover 57 synonyms, antonyms, idiomatic expressions, and related words for sinister, like: evil, bad, hurtful, black, adverse, unfavorable, unpropitious, threatening, corrupt, poisonous and deleterious.