Added 9 October 2026 ambitiousness noun Categories: Describing WordsObscure Words noun ! Definition from WordNet 3.1, Princeton University. More about ambitiousness at Wordnik → Where our words come from → A strong drive for success. Related Words: ambitionambagiousnessambagiosityaspiringnessunambitiousnessdaringnessaggressivenessadventurousnessventurousnessadventuresomenessunderambitionpushiness Back to today's word