Related Clues:
- Imperturbable
- Opposite of turbulent
- Phlegmatic
- Even-tempered
- Lake __, 1980 Winter Olympics town
- Not easily excited
- Calm and tranquil
- Tranquil, even-tempered
- Composed or serene
- Calm and serene
- Peaceable and not easily disturbed
- Calm and peaceful
- Calm and not easily upset
- Peaceful and serene
- Cool and unruffled