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sinistro-

American  
especially before a vowel, sinistr-

  1. a combining form meaning “left, on the left,” used in the formation of compound words.

    sinistrodextral.

Etymology

Origin of sinistro-

From Latin sinistr-, stem of sinister ( see sinister) + -o-

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.