さえる
to be clear (of a sight, sound, colour, etc.); to be bright; to be vivid; to be crisp
A full moon is shining bright in the sky.
・be clear
・serene
・cold
・skilful
to be clear-headed;to be alert;to be on the ball;to be wide awake
to look upbeat;to be perky;to be cheerful
to master (a skill);to excel at;to cleanly execute
to be satisfying
to become frigid;to become intensely cold