"Unextinguishable" is a word in ENGLISH

unextinguishable ENGLISH
Definition:

Inextinguishable.

Few words of positivity

If you your lips would keep from slips Five things observe with care To whom you speak of whom you speak And how and when and where.

W. E. Norris

WORD SUGGESTIONS
Laugh your heart out.

When does a hamburger wear a look like a smile button?When somebody says, 'Well done'!

implacable ENGLISH

Incapable of ebign relieved or assuaged; inextinguishable.

Read the complete definition
inextinguible ENGLISH

Inextinguishable.

Read the complete definition

Not capable of being extinguished; extinguishable; unquenchable; as, inextinguishable flame, light, thirst, desire, feuds.

Read the complete definition

So as not to be extinguished; in an inextinguishable manner.

Read the complete definition
quenchless ENGLISH

Incapable of being quenched; inextinguishable; as, quenchless fire or fury.

Read the complete definition