Superlative form of chancy: most chancy.(adjective)
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Use "chanciest" in a sentence
"Over the last six years, NIAC has backed 118 studies into the chanciest of propositions: interplanetary rapid transit , aircraft without moving parts , and radio signals bounced off of meteors' trails ."
"This is the chanciest list of all, because most closers graduate to the role only after the preceding closer gets injured, traded or demoted to middle relief things that rarely are predictable."
"Whatever the case, I hoped that Albert would have better luck, and was once again grateful that I was only part-owner of the boat, and not a real fisherman or farmer, the two chanciest professions that I knew of."