From under- + ambition. <span class="searchmatch">underambition</span> (uncountable) The quality of being underambitious. 2002, Eric Ruding, Middle Management in Action: Practical Approaches...
ambitionate ambitionize ambitionless nonambition overambition unambition <span class="searchmatch">underambition</span> ambience ambient ambit ambitious ambitionist desire object of desire...
underagitation underaid underallocate underallocation underallotment <span class="searchmatch">underambition</span> underambitious underamplification underamplify underanalysis underanalyzed...