advance guard. vanguard, van.

advancement, n. progress, progression; promotion, preferment,
exaltation, aggrandizement, furtherance.

advantage, n. vantage-ground; superiority, mastery, ascendency;
benefit, avail, profit. Antonym: disadvantage.

adventurous, a. adventuresome, temerarious, venturous.

adversary, n. enemy, foe, antagonist, opponent.

adversity, n. misfortune, buffeting, disaster, affliction, reverses,
trouble.

advertise, v. announce, publish, proclaim, trumpet.

advertisement, n. announcement.

advice, n. counsel, admonition, monition, recommendation;
information, tidings, report. Associated Words: admonitory, mentorial,
monitorial.

advisable, a. expedient, desirable, befitting. Antonym:
inadvisable.

advise, v. counsel, admonish, warn; apprise, inform, notify,
acquaint, tell; advise with, consult, confer.