Synonyms of the word 
UNQUENCHABLE → INSATIABLE - INSATIATE - QUENCHLESS - UNSATIABLE
unquenchable
- adj. That cannot be quenched.
insatiable
- adj. Not satiable; incapable of being satisfied or appeased; very greedy.
insatiate
- adj. That is not satiated; insatiable.
quenchless
- adj. That cannot be quenched; unquenchable.
unsatiable
- adj. Obsolete form of insatiable.
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