unquenchable (adj.)
- acquisitive
- all-devouring
- avaricious
- avid
- bottomless
- covetous
- deathless
- devouring
- esurient
- gluttonous
- grabby
- grasping
- greedy
- hoggish
- immortal
- imperishable
- impregnable
- incorruptible
- indelible
- indestructible
- ineradicable
- inexpugnable
- inextinguishable
- insatiable
- insatiate
- invincible
- invulnerable
- irrepressible
- limitless
- mercenary
- miserly
- omnivorous
- overgreedy
- piggish
- quenchless
- rapacious
- ravening
- ravenous
- sordid
- swinish
- unappeasable
- undestroyable
- undying
- unsated
- unsatisfiable
- unsatisfied
- venal
- voracious
