Crossword puzzle clue "serious as a heart attack"

Here are the possible solutions for serious as a heart attack clue

Answer
Clue
Relevancy
grave
Clue
Serious as a heart attack
Definition
to engrave
firstdegree
Clue
Most serious or least serious
sic
Clue
"Attack!", to an attack dog
quadruplebypass
Clue
Serious heart surgery
coronary
Clue
Heart attack, commonly
Heart attack
Definition
an artery supplying blood to the heart
demi
Clue
"Heart Attack" singer Lovato
demilovato
Clue
"Heart Attack" singer whose first TV series lead role was on the Disney Channel's "Sonny with a Chance": 2 wds.

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