Answer: calms

AnswerCrossword Clue
CALMSPlacates
CALMSTranquilizes.
CALMSStills.
CALMSLulls
CALMS... down (subsides)
CALMSWindless conditions
CALMSStorms' precursors
CALMSKon-Tiki's troubles
CALMSAllays
CALMSBeaufort-scale recordings
CALMSQuiet times
CALMSAppeases
CALMSPacifies.
CALMSQuiets anger
CALMSQuiets, as anger
CALMSDifficult conditions for sailing
calmsserenity
calmsto make or become calm
calmsstill; not windy
calmsnot excited; tranquil
calmsabsence of wind
calmsfreedom from disturbance
calmsCALM, to become serene (calm, tranquil)
CALMSQuiets down
CALMSSedates
CALMSThey come before storms
CALMSThey sometimes precede storms
CALMSStorm preceders
CALMSComposes
CALMSHeads off hysteria
CALMSPuts at ease
CALMSSettles down
CALMSAllays the fears of
CALMSTranquilizes
CALMSPacifies
CALMSInstills peace in
CALMSQuiets
CALMSSettles
CALMSMollifies
CALMSEases one's anxiety