The most common and most likely answer to this crossword clue is the 6 letter word ETHANE which also is the latest solution we found used in New York Times in 2017.
C2H6, familiarly crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| ETHANE | 100 % | 6 | 
Words with a meaning similar to the clue: C2H6, familiarly
These words may or may not be a possible solution to this crosswords clue.- ethane
 - acquainted
 - bossy
 - cat
 - commune
 - comune
 - crack
 - familiarize
 - free
 - goodman
 - hobnob
 - homely
 
Crossword Answer definitions
ETHANE noun- An aliphatic hydrocarbon, C2H6, gaseous at normal temperatures and pressures, being a constituent of natural gas.
 - The same compound, subjected to modification by replacing one or more of the hydrogen atoms with other radicals.
 
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution