Answer:

calm

Answer	Crossword Clue
CALM	Composed
CALM	Not windy
CALM	Pre-storm period

CALM	Precedes a storm
CALM	At peace
CALM	Tranquil
CALM	Unruffled
CALM	Bane for sailors
CALM	Storm's eye, e.g.
CALM	Windless
CALM	Not stormy

CALM	Tranquil, as seas
CALM	Time before a storm
CALM	Chilling, so to speak
CALM	Hard to rattle
CALM	Settle down
CALM	Stress-free
CALM	Pacify
CALM	Relax

CALM	0 on the Beaufort scale
CALM	Devoid of wind
CALM	Sailor's nightmare
CALM	Peace and quiet
CALM	Repose
CALM	Not at all excited
CALM	Relaxed
CALM	Collected

CALM	Like the eye of a storm
CALM	Pacific
CALM	Unflappable
CALM	Cool
CALM	... before the storm
CALM	Pre-storm status
CALM	Storm preceder
CALM	Waveless

CALM	Partner of cool and collected
CALM	Appease
CALM	Pre-storm period, perhaps
CALM	Still
CALM	Halcyon