Idiom Breakdown

to the backbone

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Definition

Through and through; thoroughly; entirely.

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In Context

"staunch to the backbone"
"Sir Culling was an extreme Low Churchman, an Exeter Hallite to the backbone, and the head and front of the Platitudinarian Party."
"In temperament he was Dutch to the backbone — at least as we imagine Dutch."

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Also Said As

to the bone
to the core
all the way
from soup to nuts
in excelsis
to the backbone
to the bone
to the brim
to the core
to the fullest
to the full
to the gills
to the gunnels
to the hilt
to the max
to the nines
to the nth degree
to the tonsils
to the top of one's bent
top to bottom
up to eleven