The most common and most likely answer to this crossword clue is the 5 letter word KSTAR which also is the latest solution we found used in New York Times in 2013.
Arcturus, eg, spectrally crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| KSTAR | 100 % | 5 | 
Words with a meaning similar to the clue: Arcturus, eg, spectrally
These words may or may not be a possible solution to this crosswords clue.- achernar
 - achromatic
 - aldebaran
 - algol
 - altair
 - antares
 - apparitional
 - ass
 - blue shift
 - bohr
 - boo
 - canopus
 
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution