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threatening or portending evil, harm, or trouble; ominous:
a sinister remark.
bad, evil, base, or wicked; fell:
his sinister purposes.
unfortunate; disastrous; unfavorable:
a sinister accident.
of or on the left side; left.
Heraldry. noting the side of an escutcheon or achievement of arms that is to the left of the bearer (opposed to dexter).
threatening or suggesting evil or harm; ominous: a sinister glance
evil or treacherous, esp in a mysterious way
(usually postpositive) (heraldry) of, on, or starting from the left side from the bearer’s point of view and therefore on the spectator’s right
(archaic) located on the left side
(archaic) (of signs, omens, etc) unfavourable

sinister sin·is·ter (sĭn’ĭ-stər)

Presaging trouble; ominous.

On the left side; left.

sin’is·ter·ly adv.
sin’is·ter·ness n.


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    sinistrad sin·is·trad (sĭn’ĭ-strād’, sĭ-nĭs’trād’) adv. Toward the left side.

  • Sinistral

    adjective 1. of, relating to, or on the left side; left (opposed to dextral). 2. left-handed. 3. (of certain gastropod shells) coiling counterclockwise, as seen from the apex. adjective 1. of, relating to, or located on the left side, esp the left side of the body 2. a technical term for left-handed 3. (of the […]

  • Sinistrality

    [sin-uh-stral-i-tee] /ˌsɪn əˈstræl ɪ ti/ noun 1. the state or quality of having the left side or its parts or members different from and, usually, more efficient than the right side or its parts or members; left-handedness. 2. preference for using the left hand or side. 3. the state of being sinistral. sinistrality sin·is·tral·i·ty (sĭn’ĭ-strāl’ĭ-tē) […]

  • Sinistration

    [sin-uh-strey-shuh n] /ˌsɪn əˈstreɪ ʃən/ noun 1. the quality or state of being left-handed.

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