WordNet sense 1 (spoken with emphasis):

emphasised, emphasized

WordNet sense 2 (bearing a stress or accent):

accented, stressed

WordNet sense 3 (sudden and strong):

exclamatory

WordNet sense 4 (characterized by or full of force or strength (often but not necessarily physical)):

forceful

WordNet sense 5 (inclined to bold and confident assertion; aggressively self-assured):

assertive