Answer:

PYRO

Answer	Crossword Clue
PYRO	One who lights up a room?
PYRO	Fire (prefix)
PYRO	Firebug

PYRO	X-Men adversary who wears a flamethrower
PYRO	Short fire starter?
PYRO	Fire starter?
PYRO	Technical beginner?
PYRO	Small fire starter?
PYRO	Prefix with mania
PYRO	X-Men enemy who can control fire
PYRO	Fire fanatic

PYRO	Igniter of a sort, informally
PYRO	One with fire power, briefly?
PYRO	One involved in match play?
PYRO	One who likes to light up
PYRO	Match play devotee?
PYRO	One who's always starting something?
PYRO	Firebug, slangily
PYRO	Torch

PYRO	Fire: Pref.
PYRO	Prefix with technic
PYRO	It means "fire"
PYRO	"Fire" starter
PYRO	Prefix for "fire"
PYRO	One who might be guilty of an illegal firing?
PYRO	Person with a burning desire?
PYRO	Fire: Comb. form.

PYRO	Heat: Comb. form.
PYRO	Heat: Prefix.
PYRO	Fire: Prefix.
PYRO	Fire: Prefix
PYRO	Prefix with technics
PYRO	Type of mania
PYRO	Heat: Comb. form
PYRO	Beginner for technics

PYRO	Firebug, for short
PYRO	One engaged in match play?
PYRO	One looking for a match?
PYRO	Lighting specialist, informally?
PYRO	Fire fancier, for short