The most common and most likely answer to this crossword clue is the 5 letter word SPYON which also is the latest solution we found used in USA Today in 2018.
Observe secretly crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| SPYON | 100 % | 5 | 
Words with a meaning similar to the clue: Observe secretly
These words may or may not be a possible solution to this crosswords clue.- spy
 - snoop
 - surveil
 - lurk
 - snooping
 - load
 - shadow
 - professor
 - shift
 - diversion
 - ingress
 - undertake
 
Crossword Answer definitions
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution