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“most infusible”
infusible (adjective), more infusible, most infusible
1. Incapable of fusion or melting (Latin in-, "not" + fusio, "fusion").
2. Capable of being made into an infusion (Latin in, "into" + fundere, "to pour").
2. Capable of being made into an infusion (Latin in, "into" + fundere, "to pour").
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fus-, fun-, fund-, fut-, found-
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