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Sign of smooth operation Crossword Clue
Here is the answer for the crossword clue Sign of smooth operation . 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 3 letters. We think the likely answer to this clue is HUM.
Crossword Answer For Sign of smooth operation:
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40 Potential Answers:
| Rank | Answer | Length | Source | Date |
|---|---|---|---|---|
| 98% | HUM Sign of smooth operation | (3) | ||
| 4% | SADE "Smooth Operator" singer | (4) | USA Today | Aug 20, 2025 |
| 3% | DISUSED No longer in operation | (7) | The Times Concise | Sep 8, 2025 |
| 3% | INBUSINESS Operating commercially | (10) | Universal | Sep 3, 2025 |
| 3% | CREDO Operating principle | (5) | LA Times Daily | Sep 2, 2025 |
| 3% | ROUGH Opposite of 'smooth' (5) | (5) | Puzzler | Sep 2, 2025 |
| 3% | GLIB Smooth-talking | (4) | New York Times | Sep 1, 2025 |
| 3% | AUTO Not manually operated | (4) | USA Today | Aug 30, 2025 |
| 3% | SANDS Smooths, as wood | (5) | Universal | Aug 29, 2025 |
| 3% | SLEEK Smooth-lined | (5) | Puzzler Backwords | Aug 29, 2025 |
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We found 40 solutions for Sign of smooth operation. The top solutions are determined by popularity, ratings and frequency of searches. The most likely answer for the clue is HUM.
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