a. 难熄灭的, 难镇静的, 难压制的

[机] 淬火困难的, 不淬火的

[ adj ]
impossible to quench
<adj.all>
unquenchable thirst

Quenchless \Quench"less\, a.
Incapable of being quenched; inextinguishable; as, quenchless
fire or fury. ``Once kindled, quenchless evermore.'' --Byron.

Syn: Inextinguishable; unquenchable.
※ -- {Quench"less*ly}, adv. --
{Quench"less*ness}, n.