Jenessa \j(e)-nessa, jen(es)-sa\ as a girl's name. Combination of Jennifer and Vanessa, or also possibly an elaboration of Janice.
Jenessa has 3 variant forms: Gianessa, Janessa and Jinessa.
For more information, see also the related name Je-.
Baby names that sound like Jenessa are Genessa, Jennessa and Jonessa.