Merriam-Webster Collegiate Dictionary - emphatic

 adjective  Etymology: Greek emphatikos, from emphainein  Date: 1635  1. uttered with or marked by emphasis an ~ refusal  2. tending to express oneself in forceful speech or to take decisive action  3. attracting special attention  4. constituting or belonging to a set of tense forms in English consisting of the auxiliary do followed by an infinitive without to that are used to facilitate rhetorical inversion or to emphasize something  • ~ally adverb