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to calm down; to compose oneself; to regain presence of mind; to relax
to calm down; to settle down; to die down; to become stable; to abate
to settle down (in a location, job, etc.); to settle in
to be settled (of an arrangement, conclusion, etc.); to be fixed; to have been reached
to harmonize with; to harmonise with; to match; to suit; to fit
to be unobtrusive; to be quiet; to be subdued
彼女は深呼吸をしてようやく落ち着いた。
She finally calmed down after taking a deep breath.
騒動が落ち着くまで外出を控えることにした。
I decided to refrain from going out until the commotion settled.
引っ越して半年経ち、新しい街に落ち着いている。
Half a year after moving, I have settled into the new town.