Definition of self-assertive in US English:

self-assertive

adjective

  • Having or characterized by self-assertion; expressing oneself confidently and forcefully.

    ‘I've always encouraged students to be self-assertive’
    ‘his theatrical background may have contributed to his self-assertive quality as a broadcaster’

Pronunciation

self-assertive

/ˌselfəˈsərdiv//ˌsɛlfəˈsərdɪv/