This page lists every known solution for the clue “Operating System” in Crossword Challenge. Because this clue can appear in different puzzles (levels) with different required answers, we first list all the answers, then show which one appears in each puzzle below.
Operating System Crossword Challenge Answers (All Variants)
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If more than one answer is listed, open your puzzle page below to confirm the one used there.
All Known Answers for Operating System Clue
Puzzle 127 — - Puzzle 565 —
- Puzzle 759 —
- Puzzle 1211 —
- Puzzle 1345 —
- Puzzle 1443 —
Where This Clue Appears
Last Checked: December 28, 2025