un·quenchable \“+\adjective Etymology: Middle English, from un- (I) + quenchen to quench + -able 1.: not quenchable : inextinguishable < an unquenchable underground fire > 2.: not capable of being satisfied, quelled, or discouraged : insatiable < the author's unquenchable enthusiasm for his theories — Ralph Linton > • un·quench·ably\-əblē, -li\adverb