suspiciously

UK: /səˈspɪʃəsli/

WordReference Random House Learner's Dictionary of American English © 2026

sus•pi•cious /səˈspɪʃəs/   adj. 

1. tending to cause or raise suspicion:
   Her suspicious behavior near the submarine made the military police think she might be a spy.
2. likely or inclined to suspect, esp. inclined to suspect evil;
   distrustful:
   He was suspicious of strangers.
3. expressing or indicating suspicion:
   a suspicious glance.

sus•pi•cious•ly, adv. 

WordReference Random House Unabridged Dictionary of American English © 2026

sus•pi•cious  (sə spish′əs), adj. 

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

• Latin suspīciōsus, equivalent. to suspīci- (see suspicion) + -ōsus -ous
• Middle English 1300–50

sus•pi′cious•ly, adv. 
sus•pi′cious•ness, n. 
Synonyms

• 1. suspect, dubious, doubtful.
• 2. mistrustful, wary, disbelieving.