The most common and most likely answer to this crossword clue is the 9 letter word EXTENSION which also is the latest solution we found used in New York Times in 2015.
File name add-on crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| EXTENSION | 100 % | 9 | 
Words with a meaning similar to the clue: File name add-on
These words may or may not be a possible solution to this crosswords clue.- interfile
 - index
 - indexed
 - indexing
 - inscribe
 - ascribe
 - nee
 - filename
 - odessa
 - rolodex
 - midi
 - computer file name
 
Crossword Answer definitions
EXTENSION noun- The act of extending; a stretching out; enlargement in length or breadth; an increase
 - The state of being extended
 - That property of a body by which it occupies a portion of space (or time, e.g. "spatiotemporal extension")
 - A part of a building that has been extended from the original
 - Capacity of a concept or general term to include a greater or smaller number of objects; — correlative of intension.
 - A written engagement on the part of a creditor, allowing a debtor further time to pay a debt.
 - The operation of stretching a broken bone so as to bring the fragments into the same straight line.
 - An exercise in which an arm or leg is straightened against resistance.
 - A simple offensive action, consisting of extending the weapon arm forward.
 - A numerical code used to specify a specific telephone in a telecommunication network.
 - A file extension.
 - An optional software component that adds functionality to an application.
 - The set of tuples of values that, used as arguments, satisfy the predicate.
 - (grammar) A kind of derivative morpheme applied to verbs in Bantu languages.
 
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution