sinister

UK: ˈsɪnɪstə | US: ˈsɪnɪstər

Definition
  1. adj. threatening or suggesting harm, evil, or misfortune

  2. adj. of, relating to, or situated to the left (archaic)

  3. adj. ill-omened or unlucky (historical)

Structure
sinist <left>er <adjective suffix>
Etymology

sinister = sinist<left> + er<adjective suffix>

  • sinist (from Latin sinister "left, unlucky")
  • er (adjective-forming suffix, often indicating a quality or state)

Etymology Origin:
The word sinister originates from Latin sinister, meaning "left" or "unlucky." In ancient Roman augury, the left side was considered ill-omened, as birds appearing on the left were believed to portend misfortune. Over time, the term evolved in English to emphasize the negative connotations of "evil" or "harmful," while its original spatial meaning ("left") became archaic. The shift reflects cultural associations linking the left side with weakness or deceit (e.g., "left-handed compliments").

Examples
  1. The detective noticed a sinister figure lurking in the shadows.

  2. Her smile held a sinister undertone that made him uneasy.

  3. The old mansion had a sinister reputation in the village.

  4. The villain’s plan was as sinister as it was clever.

  5. In medieval Europe, a sinister omen often foretold disaster.