The word "dynamic" refers to an energetic, changing and active quality. This adjective is used in fields ranging from physics to business, entertainment, politics and psychology.
Synonyms for "dynamic" include "animated," "spirited" and "lively." Critics heap praises on actors who give a dynamic portrayal on stage, and marketing departments and campaign managers use the word to lend a feeling of excitement to their products or candidates instead of the appearance of being dull or routine.
Not surprisingly, "dynamic" and "dynamite" share the same etymological origin. "Dynamics" and "dynamism" are related terms from the science field that pertain to the study of motion forces.