(Intransitive) To become light, to brighten.
With little weight and few burdens:
To cause (the skin) to redden or grow hot, as from strong emotion or stimulants.
To watch, or sit up with, at night, as a dead body.
To begin to burn:
(Physics) To increase the heat energy of an object.
Find another word for fire-up. In this page you can discover 7 synonyms, antonyms, idiomatic expressions, and related words for fire-up, like: light-up, light, inflame, stir-up, wake, ignite and heat.