The most common and most likely answer to this crossword clue is the 9 letter word MOISTENER which also is the latest solution we found used in Wall Street Journal in 2013.
Envelope-sealing aid crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| MOISTENER | 100 % | 9 | 
Words with a meaning similar to the clue: Envelope-sealing aid
These words may or may not be a possible solution to this crosswords clue.- moistener
 - seal
 - trap
 - lute
 - cap
 - trapped
 - trapping
 - undercoat
 - zip
 - bulla
 - capsule
 - shell
 
Crossword Answer definitions
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution