dynamic
adjective(dy-nam-ic)
characterized by action or forcefulness or force of personality
Examples:
A dynamic market. 
A dynamic speaker. 
The dynamic president of the firm. 
dynamic
adjective(dy-nam-ic)
(used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water')) expressing action rather than a state of being
dynamic
noun(dy-nam-ic)
an efficient incentive
Synonyms: moral force, 
Examples:
They hoped it would act as a spiritual dynamic on all churches. 
dynamic
adjective(dy-nam-ic)
of or relating to dynamics