Not satisfied or fulfilled; still remaining or persisting. Her unquenched thirst for knowledge drove her to read every book she could find.
Not extinguished or put out, especially referring to a fire or flame. The unquenched flames continued to burn through the night, despite the firefighters' efforts.
(Metallurgy, materials science) Of metal, glass, or another material: not subjected to rapid cooling after heating; not hardened by quenching. Because the steel was unquenched, it remained relatively soft and easy to machine.