What is a synonym for fire?

It depends on what aspect of "fire" you want to capture. Here are some synonyms for different meanings of "fire":

For the physical phenomenon:

* Blaze

* Flame

* Combustion

* Incineration

* Conflagration (a large, destructive fire)

* Inferno (a very intense fire)

For the figurative meaning:

* Passion

* Enthusiasm

* Zeal

* Vigor

* Intensity

* Spirit

* Drive

* Fervor

* Ardor

For the meaning of dismissal:

* Discharge

* Dismiss

* Lay off

* Terminate

* Sack

For the meaning of shooting a weapon:

* Shoot

* Discharge

* Blast

To give you the best synonym, please provide more context about how you are using the word "fire."