The emotional stamina and vigor, passion, or inner drive to achieve something, to take action, etc.
A strong desire; an itch to do something.
To press; to push; to drive; to impel; to force onward.
To present in an urgent manner; to insist upon.
To put mental pressure on; to ply with motives, arguments, persuasion, or importunity.
To press onward or forward.
To be pressing in argument; to insist; to persist.
To provoke; to exasperate.
To press hard upon; to follow closely.