bolt upright
Preserved but no longer current.
Meaning · English
As erect, or straight up, as an arrow set on its end.
Era: ca. 1811 (Georgian)
Where it’s used:
Origin
British & Irish English
Sources & notes
Historical definition reproduced from Grose’s Dictionary of the Vulgar Tongue (1811 edition, public domain; Project Gutenberg #5402, retrieved 2026-07-31). Reflects the attitudes of its era.
Common questions
What does “bolt upright” mean?
As erect, or straight up, as an arrow set on its end.
Is “bolt upright” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.