The most common and most likely answer to this crossword clue is the 4 letter word THEL which also is the latest solution we found used in LA Times in 2018.
Chicago commuter system, familiarly crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| THEL | 100 % | 4 | 
Words with a meaning similar to the clue: Chicago commuter system, familiarly
These words may or may not be a possible solution to this crosswords clue.- pipes
 - local
 - metro
 - take
 - bus
 - palatine
 - city
 - jets
 - wyoming
 - nasa
 - through
 - daily
 
Crossword Answer definitions
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution