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ambition [ambition 词源字典]: ambition: [14] Like ambient, ambition comes ultimately from the Latin compound verb ambīre ‘go round’ (formed from the prefix ambi-, as in AMBIDEXTROUS, and the verb īre ‘go’, which also gave English exit, initial, and itinerant). But while ambient, a 16th-century acquisition, remains fairly faithful to the literal meaning of the verb, ambition depends on a more metaphorical use.

It seems that the verb’s nominal derivative, ambitiō, developed connotations of ‘going around soliciting votes’ – ‘canvassing’, in fact – and hence, figuratively, of ‘seeking favour or honour’. When the word was first borrowed into English, via Old French ambition, it had distinctly negative associations of ‘greed for success’ (Reginald Pecock writes of ‘Vices [such] as pride, ambition, vainglory’, The repressor of overmuch blaming of the clergy 1449), but by the 18th century it was a more respectable emotion.
=> exit, initial, itinerant[ambition etymology, ambition origin, 英语词源]
solicit (v.): early 15c., "to disturb, trouble," from Middle French soliciter (14c.), from Latin sollicitare "to disturb, rouse, trouble, harass; stimulate, provoke," from sollicitus "agitated," from sollus "whole, entire" + citus "aroused," past participle of ciere "shake, excite, set in motion" (see cite). Related: Solicited; soliciting.

Meaning "entreat, petition" is from 1520s. Meaning "to further (business affairs)" evolved mid-15c. from Middle French sense of "manage affairs." The sexual sense (often in reference to prostitutes) is attested from 1710, probably from a merger of the business sense and an earlier sense of "to court or beg the favor of" (a woman), attested from 1590s.
solicitation (n.): late 15c., "management," from Middle French solicitation and directly from Latin solicitationem (nominative solicitatio) "vexation, disturbance, instigation," noun of action from past participle stem of solicitare (see solicit). Meaning "action of soliciting" is from 1520s. Specific sexual sense is from c. 1600.