Answer: acclimate

AnswerCrossword Clue
ACCLIMATECool indoor conditions?
ACCLIMATEBecome used to new conditions.
ACCLIMATEAdapt
ACCLIMATEHarden against PAin, etc.
acclimateHarden off (a plant)
acclimate(US) to habituate to a climate not native als
acclimateBecome accustomed to a new climate or to new conditions
acclimateRespond physiologically or behaviorally to a change in a single environmental factor