-pə(r) noun
( -s )
Etymology: snoop (I) + -er
: one that snoops: as
a. : a prying meddler
b. : one employed as an inspector, investigator, detective, or spy
a wartime censor — one of the 15,000 snoopers who … opened your mail — Mary Knight
an increased number of snoopers dogging him — Joseph Wechsberg
c. : an airplane working alone to search out, observe, and sometimes attack targets