sinister

C2+ Topic:People & Society

US /ˈsɪnɪstər/ UK /ˈsɪnɪstə/ See IPA manual

adj

Meanings

1

adj
giving an impression of evil or threatening harm

A sinister shadow moved across the curtained window.

Thesaurus

Synonyms

1 adj · giving an impression of... menacing ominous threatening malevolent forbidding baleful

Opposites

benign auspicious benevolent wholesome

Word family

Derived forms sinisterlysinisterness

Related forms sinistraldexter

Etymology

From Latin sinister ('left, on the left side'), which acquired connotations of unluckiness and evil in augury, via Old French sinistre.

sinister Latin

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People & Society Word Formation & Derivatives

# sinister

**Type:** Word
**Level:** C2+
**Part of speech:** adj
**IPA (US):** ˈsɪnɪstər
**IPA (UK):** ˈsɪnɪstə

## Meanings
1. giving an impression of evil or threatening harm

## Examples
- A sinister shadow moved across the curtained window.

## Synonyms
- menacing
- ominous
- threatening
- malevolent
- forbidding
- baleful

## Antonyms
- benign
- auspicious
- benevolent
- wholesome

## Derived Forms
- sinisterly
- sinisterness

## Related Forms
- sinistral
- dexter

## Roots and Affixes
- Root: sinister

## Etymology
From Latin sinister ('left, on the left side'), which acquired connotations of unluckiness and evil in augury, via Old French sinistre.

## AI Etymology
Sinister comes from Latin sinister ('left, on the left side'), which acquired connotations of unluckiness and evil in augury, via Old French sinistre. The historical chain includes Latin sinister. Older glosses in the chain include "left, on the left side", which help explain the semantic range of the modern word. Morphologically, sinister is best read as borrowing, yielding an English adjective shaped by both form history and later usage. In current English it functions as an adjective, with the sense "giving an impression of evil or threatening harm". English derivatives include sinisterly and sinisterness; related forms include sinistral and dexter. The result is an English adjective whose etymology preserves the older forms while supporting the word's specialized modern meaning.

## Topics
- People & Society
- Word Formation & Derivatives

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sinister

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