The most common and most likely answer to this crossword clue is the 3 letter word OED which also is the latest solution we found used in New York Times in 2013.
Ref work that took 70 years to complete crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters |
|---|---|---|
| OED | 100 % | 3 |
Words with a meaning similar to the clue: Ref work that took 70 years to complete
These words may or may not be a possible solution to this crosswords clue.- pound
- par
- oed
- perfection
- serve
- take
- biennial
- log
- time
- mill
- roots
- singapore
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution