The most common and most likely answer to this crossword clue is the 4 letter word PAAR which also is the latest solution we found used in New York Times in 2021.
Jack who pioneered late-night talk crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| PAAR | 100 % | 4 | 
Words with a meaning similar to the clue: Jack who pioneered late-night talk
These words may or may not be a possible solution to this crosswords clue.- carson
 - get
 - dave
 - burn
 - seth
 - last
 - faced
 - stewart
 - jacks
 - raid
 - later
 - craig
 
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution