CROSSWORD CLUE
"Early operating system"
We found 2 possible answers for this clue.
Most Likely Answer
UNIX4 Letters
Top Solution
This answer has appeared 6 times in puzzles. It is statistically the most common solution.
Word Analysis
Length4
First LetterU
Last LetterX
Vowels2
All Possible Solutions
UNIX4 L
86%
Seen In
2026
DOS3 L
14%
Seen In
2004