The most common and most likely answer to this crossword clue is the 3 letter word SOS which also is the latest solution we found used in 3Across in 2005.
Signal first used in 1909 crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters |
|---|---|---|
| SOS | 100 % | 3 |
Words with a meaning similar to the clue: Signal first used in 1909
These words may or may not be a possible solution to this crosswords clue.- bleriot
- louis bleriot
- tudor
- spender
- durban
- compander
- rusk
- memphis
- bacon
- braun
- mason
- peary
Crossword Answer definitions
SOS noun- A syllable used in solfège to represent the fifth note of a major scale.
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution