Clue: Run smoothly, as an engine

Answer: 2 possible answers to Run smoothly, as an engine. From 3 to 4 leters.

Run smoothly, as an engine answers with 3 characters:

• HUM

Run smoothly, as an engine answers with 4 characters:

• PURR

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Similar Clues:

• Runs smoothly, as an engine (PURRS with 5 letters)
• Runs smoothly (e.g. HUMS with 4 letters)
• Runs well, as an engine (HUMS with 4 letters)
• Keep the engine running (IDLE with 4 letters)
• Leave the engine running (IDLE with 4 letters)
• Keep the engine running in park (IDLE with 4 letters)
• Park with the engine running (IDLE with 4 letters)
• Kept the engine running (IDLED with 5 letters)
• Keeps the engine running (IDLES with 5 letters)
• Running smoothly, perhaps (OILED with 5 letters)