Meanings
adverbsinisterly (comparative more sinisterly, superlative most sinisterly)
comparative more sinisterly · superlative most sinisterly · alternative obsolete sinistrely
- In a sinister manner.
Origin
- Middle Englishsinistrely
- Englishsinisterly
From Middle English sinistrely, equivalent to sinister + -ly.
More words from Middle English
Full word history & related roots →Translations
Polish arcygroźnie
- arcygroźnieTranslations
Cite this entry
APA
sinisterly. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/sinisterly
MLA
“sinisterly.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sinisterly. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “sinisterly,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/sinisterly.
Source: sinisterly on Wiktionary, CC BY-SA 4.0.