sinistrally

English

Etymology

sinistral +‎ -ly

Adverb

sinistrally (comparative more sinistrally, superlative most sinistrally)

1. Toward the left; in a sinistral manner.
   • 1895, Joseph LeConte, Sight: An Exposition of the Principles of Monocular and Binocular Vision:

     rotate it on its axis inward, i.e., sinistrally for the right eye and dextrally for the left

References

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