1. 
[syn: assertive, self-asserting, self-assertive]
The Collaborative International Dictionary of English v.0.48:
Self-asserting \Self`-as*sert"ing\, a.
   asserting one's self, or one's own rights or claims; hence,
   putting one's self forward in a confident or assuming manner.
   [1913 Webster]
WordNet (r) 3.0 (2006):
self-asserting
    adj 1: aggressively self-assured; "an energetic assertive boy
           who was always ready to argue"; "pointing directly at a
           listener is an assertive act" [syn: assertive, self-
           asserting, self-assertive] [ant: unassertive]