grav·i·ty 
/ˈgrævəti/ noun
/ˈgrævəti/ noun [noncount] 1 : a very serious quality or condition : the condition of being grave or serious
▪ They didn't seem to understand the gravity [=seriousness] of the situation. ▪ He uttered the oath with proper gravity. [=solemnity] 2 technical : the natural force that tends to cause physical things to move towards each other : the force that causes things to fall towards the Earth
▪ attempting to defy gravity ▪ the force of gravity — see also center of gravity
▪ They didn't seem to understand the gravity [=seriousness] of the situation. ▪ He uttered the oath with proper gravity. [=solemnity]
▪ attempting to defy gravity ▪ the force of gravity — see also center of gravity
