The most common and most likely answer to this crossword clue is the 3 letter word DUD which also is the latest solution we found used in Wall Street Journal in 2005.
Not-so-functional firecracker crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| DUD | 100 % | 3 | 
Words with a meaning similar to the clue: Not-so-functional firecracker
These words may or may not be a possible solution to this crosswords clue.- dud
 - bad
 - baf
 - bsd
 - vad
 - squib
 - inseparably
 - distant
 - trot
 - virtual
 - upping
 - ups
 
Crossword Answer definitions
DUD noun- A device or machine that is useless because it does not work properly or has failed to work, such as a bomb, or explosive projectile.
 - A failure of any kind.
 - Clothes, now always used in plural form duds.
 
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution