Mainframe operating system Crossword Clue

Here is the answer for the crossword clue Mainframe operating system . We have found 40 possible answers for this clue in our database. Among them, one solution stands out with a 98% match which has a length of 4 letters. We think the likely answer to this clue is UNIX.

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Crossword Answer For Mainframe operating system:

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40 Potential Answers:

RankAnswerLengthSourceDate
98% UNIX Mainframe operating system (4)
3% USED Operated (4) Premier Sunday Feb 8, 2026
3% USERS Operators (5) The Telegraph Plusword Feb 4, 2026
3% LINUX Open-source operating system (5) The Telegraph Cross Atlantic Jan 24, 2026
3% METRIC __ system (6) Commuter Jan 23, 2026
3% RAN Operated (3) Commuter Jan 17, 2026
3% ANDROID Mobile operating system with a robot logo (7) USA Today Jan 5, 2026
2% WORKER Operative (6) (6) Puzzler Feb 10, 2026
2% TRAP Sting operation (4) New York Times Feb 8, 2026
2% PEDAL Foot-operated lever (5) The Telegraph Cross Atlantic Feb 8, 2026
Mainframe operating system Crossword Clue
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We found 40 solutions for Mainframe operating system. The top solutions are determined by popularity, ratings and frequency of searches. The most likely answer for the clue is UNIX.

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