emphatical

 Uttered with emphasis; made prominent and impressive by a peculiar stress of voice; laying stress; deserving of stress or emphasis; forcible; impressive; strong; as, to remonstrate in an emphatic manner; emphatic denials; an emphatic word; an emphatic tone; emphatic reasoning.  [1913 Webster]

 Striking the sense; attracting special attention; impressive; forcible.  Bp. Reynolds.

 Forceful and definite in expression or action; -- of statements, actions, or sections of documents; as, the document contained a particularly emphatic guarantee of religious liberty.  [WordNet 1.5]

 Sudden and strong; -- of statements; as, an emphatic no.  [WordNet 1.5]