SNOOP
snoop, snooper
(noun) a spy who makes uninvited inquiries into the private affairs of others
spy, stag, snoop, sleuth
(verb) watch, observe, or inquire secretly
Source: WordNet® 3.1
Etymology
Verb
snoop (third-person singular simple present snoops, present participle snooping, simple past and past participle snooped)
To be devious and cunning so as not to be seen.
To secretly spy on or investigate, especially into the private personal life of others.
Noun
snoop (plural snoops)
The act of snooping
One who snoops
A private detective
Anagrams
• Poons, no-ops, opson, poons, spoon
Source: Wiktionary