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KEY: Adventure.
SYN: Incident, crisis, chance, hazard, occurrence, event, enterprise, casualty, undertaking, experiment, venture, trial, romance.
ANT: Matter-of-fact, matter-of-course.
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KEY: Adventurous.
SYN: Bold, brave, daring, enterprising, courageous, gallant, fearless, venturesome, rash, chivalrous, hazardous.
ANT: Timid, unenterprising, inadventurous, cowardly, nervous, hesitating, cautious.
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KEY: Adversary.