[sin-uh-struh s]


ill-omened; unlucky; disastrous.
sinistral; left.

Origin of sinistrous

1550–60; < Latin sinistr-, stem of sinister (see sinister) + -ous
Related formssin·is·trous·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sinistrous

Historical Examples of sinistrous

  • At last he got quite dexterous—and sinistrous, too, for that matter.

  • He lived in obscurity, and only went out at night; he only communicated with his fellows with the most sinistrous precautions.

  • It was the advocate of Mr. Van Buren's election, and therefore would prevent the suspicion of sinistrous design upon him.

British Dictionary definitions for sinistrous


adjective archaic

sinister or ill-omened
Derived Formssinistrously, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012