ambicioso

adj. ambitious, aspiring; eager; pushing; grandiose

n. lieu

adj. ambitious, aspiring, covetous

= ambitious, high-flying, aspiring, social climber, careerist.
Ex: No attempt is made to provide any detailed familiarity with the entire range of operators; that would be too ambitious an aim for this modest account.
Ex: I do have to add, however, that this rapid character drawing was a touch spoiled by the bathos of Slake's high-flying style.
Ex: The idea was to give the 'best and most aspiring poor' the opportunity to improve; the not so good and less aspiring be damned!.
Ex: New ideas are most likely to be introduced and pursued by 'social climbers'.
Ex: The author discusses the differences between authentic publishers (those with the mind set of a professional) and the rest (who are regarded as greedy and vain careerists).