Answer: ampsup

AnswerCrossword Clue
AMPSUP

Intensifies

AMPSUP

Increases a few notches

AMPSUP

Intensifies, informally

AMPSUP
Excites
AMPSUP
Intensifies, in slang
AMPSUPEscalates
AMPSUPJuices
AMPSUPEnergizes
AMPSUPCharges