Answer: onfire

AnswerCrossword Clue
ONFIRE

Killing it

ONFIRE

Doing great

ONFIRE

Doing amazingly well

ONFIRE
Performing really well
ONFIRE
Hot
ONFIRESet the world ....
ONFIREArdent.
ONFIREFull of ardor.
ONFIREBurning.
ONFIREPassionate
ONFIREA person keeping Christmas tree lit (2,4)
ONFIREWhen to shoot, after "Ready, aim ..."
ONFIREBurning up
ONFIREHitting basket after basket, say
ONFIREZealous
ONFIRESpringsteen "Whoa-oh-oh, I'm ..."
ONFIRE"I'm ...": Springsteen
ONFIREIn the middle of a hot streak
ONFIREHot as a pistol
ONFIREWinning and then some
ONFIREWinning decisively and frequently
ONFIREEnthusiastic
ONFIREPerforming extremely well
ONFIREBeing destroyed by an arsonist
ONFIREHotter than hot
ONFIREBlazing
ONFIREScoring up a storm
ONFIREMaybe needing dousing
ONFIREPerforming magnificently
ONFIREBurning
ONFIREIn flames
ONFIREReally eager
ONFIRELit
ONFIREDoing really well
ONFIREAblaze
ONFIREFull of fervor
ONFIREFlaming
ONFIREReally feeling it
ONFIREShooting the lights out
ONFIREEager, to the max