adjective
[more ~; most ~]
always active or changing
having or showing a lot of energy
technical :of or relating to energy, motion, or physical force
noun
plural -ics
the way that two or more people behave with each other because of a particular situation [singular]
[count] :something that causes change or growth in something else
dynamics [noncount] technical :the science that studies motion and the forces that cause or stop motion
dynamics [plural] music :changes in how loudly a piece of music is played or sung
US