Answer: gravity

AnswerCrossword Clue
GRAVITYTerrestrial force.
GRAVITYIt keeps people grounded
GRAVITYSeriousness
gravityExtreme or alarming importance; seriousness
gravityThe degree of intensity of this, measured by acceleration
gravityThe force that attracts a body toward the center of the earth, or toward any other physical body having mass. For most purposes Newton's laws of gravity apply, with minor modifications to take the general theory of relativity into account
gravitythe force of attraction toward the earth
gravitySeriousness or solemnity of manner