In a manner that is willing to take risks and seek new experiences; boldly and daringly.
From 'adventurous' (adjective, from 'adventure' + '-ous') + '-ly' (adverbial suffix). The adjective 'adventurous' has been in English since the 15th century.
The word 'adventurous' replaced the older 'adventuresome' in formal English, though both still exist. 'Adventurous' sounds more sophisticated and is more common in writing, while 'adventuresome' feels slightly more folksy—a pattern true of many '-ous' versus '-some' pairs.
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