tending to cause or excite suspicion; questionable: suspicious behavior.
inclined to suspect, especially inclined to suspect evil; distrustful: a suspicious tyrant.
full of or feeling suspicion.
expressing or indicating suspicion: a suspicious glance.

Origin of suspicious

1300–50; Middle English < Latin suspīciōsus, equivalent to suspīci- (see suspicion) + -ōsus -ous
Related formssus·pi·cious·ly, adverbsus·pi·cious·ness, nounhy·per·sus·pi·cious, adjectivehy·per·sus·pi·cious·ly, adverbhy·per·sus·pi·cious·ness, nouno·ver·sus·pi·cious, adjectiveo·ver·sus·pi·cious·ly, adverbo·ver·sus·pi·cious·ness, nounpre·sus·pi·cious, adjectivepre·sus·pi·cious·ly, adverbpre·sus·pi·cious·ness, nounself-sus·pi·cious, adjectivesu·per·sus·pi·cious, adjectivesu·per·sus·pi·cious·ly, adverbsu·per·sus·pi·cious·ness, nounun·sus·pi·cious, adjectiveun·sus·pi·cious·ly, adverbun·sus·pi·cious·ness, noun

Synonyms for suspicious

1. suspect, dubious, doubtful. 2. mistrustful, wary, disbelieving. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for suspiciously

Contemporary Examples of suspiciously

Historical Examples of suspiciously

  • Mrs. McKee eyed her suspiciously, but Tillie's face showed no emotion.


    Mary Roberts Rinehart

  • Rosenfeld eyed him suspiciously, but, possessing a sense of humor also, he grinned.


    Mary Roberts Rinehart

  • Dorcas Jane, who was eleven and a half and not at all imaginative, eyed him suspiciously.

    The Trail Book

    Mary Austin

  • You, my reader, will probably have glanced at it as suspiciously as did Arthur Channing.

    The Channings

    Mrs. Henry Wood

  • It was an old, black-looking piece of wood, and I glanced at it suspiciously.

    My Double Life

    Sarah Bernhardt

British Dictionary definitions for suspiciously



exciting or liable to excite suspicion; questionable
disposed to suspect something wrong
indicative or expressive of suspicion
Derived Formssuspiciously, adverbsuspiciousness, noun
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

Word Origin and History for suspiciously



"deserving of or exciting suspicion," mid-14c., from Old French suspecious, from Latin suspiciosus "exciting suspicion" (see suspicion). Meaning "full of or inclined to feel suspicion" is attested from c.1400. Edgar Allan Poe (c.1845) proposed suspectful to take one of the two conflicting senses. Related: suspiciously; suspiciousness.

Online Etymology Dictionary, © 2010 Douglas Harper