sinistrously

From Middle English sinistrousely, equivalent to sinistrous +‎ -ly.

• IPA^(key): /ˈsɪnɪstɹəsli/

sinistrously (comparative more sinistrously, superlative most sinistrously) (archaic)

1. In a sinistrous manner; perversely; wrongly; unluckily or sinisterly.
2. With a tendency to use the left hand.
   • 1646, Sir Thomas Browne, Of the Right and Left Hand:

     Many, in their infancy, are sinistrously disposed, and divers continue all their life left-handed.

• “sinistrously”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.