Sinister

/ˈsɪnɪstər/

Meaning & Definition

adjective
Giving the impression that something harmful or evil is happening or will happen.
The dimly lit hallway had a sinister atmosphere that made everyone uneasy.
Associated with evil or harm.
The villain in the story had a sinister plan to take over the world.
Threatening or menacing.
His sinister grin raised suspicion among the detectives.
In heraldry, indicating the left side (when facing the shield).
The coat of arms featured a sinister dragon that signified the family's courage.

Etymology

Late Latin 'sinister' meaning 'left, on the left side, awkward, evil'

Common Phrases and Expressions

sinister plot
A scheme or plan that is harmful or evil.
sinister forces
Malevolent influences or powers at play.
sinister intentions
Malicious or harmful purposes behind actions.

Related Words

malevolent
Having or showing a wish to do evil to others.
ominous
Giving the impression that something bad or unpleasant is going to happen.
wicked
Morally wrong or bad; evil.

Slang Meanings

A vibe or atmosphere that feels eerie or unsettling.
That abandoned house gives off a sinister vibe.
Something that appears shady or suspicious.
His late-night calls have a sinister undertone.