Synonyms:
- Deceptively peaceful
- Quiet in a way that demands attention
- Carrying a warning in the stillness
- Not what it appears on the surface
- Holding its breath before the event
- Masking what is coming with perfect composure
- Unnervingly still
- Lulling everything into false security
- Beautiful and temporarily reassuring
- The kind of quiet that makes you nervous
- Promising something is about to change
- Too good to be entirely trusted