Unadventurous person Unadventurous person antonyms If you know antonyms for Unadventurous person, then you can share it. Suggest antonym for Unadventurous person Unadventurous person synonyms stick-in-the-mud stick in the mud old fogy obstinate person person set in ways antediluvian conservative diehard fossil fuddy-duddy mossback Full list of synonyms (12)