say it: uh-SUR-tiv-lee
assertively is an adverb meaning "in an assertive manner". It carries one recorded sense.
in an assertive manner
“`I will take care of my own life,' she said assertively”
Definitions, synonyms and semantic relations for assertively come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.