Crossword puzzle clue "heating up"

Here are the possible solutions for heating up clue

Answer
Clue
Relevancy
aches
Clue
Targets for heating pads
Definition
ACHE, to endure a dull lasting pain, also AKE
airgas
Clue
Heating fuel
anneal
Clue
Toughen by heating, as glass
Strengthen by heating and cooling
Free from stress by heating, as metal
Definition
to make (as steel or glass) less brittle by heating and then cooling
arousal
Clue
Heating up?
Definition
the act of arousing
bills
Clue
Statements of charges, as for heating
Definition
BILL, to charge someone for services
boiler
Clue
Part of an old heating system
Definition
a vessel for boiling

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