to pieces
to pieces {adv. phr.}
1. Into broken pieces or fragments; destroyed.
The cannon shot the town to pieces.
The vase fell to pieces in Mary's hand.
2. {informal}
So as not to work; into a state of not operating.
After 100,000 miles the car went to pieces.
When Mary heard of her mother's death, she went to pieces.
3. {informal}
Very much; greatly; exceedingly.
Joan was thrilled to pieces to see Mary.
The noise scared Bob to pieces.
4. See: PICK APART.
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Source: A Dictionary of American Idioms