straight as a die

English

Etymology

• Used in the sense of ‘correct,’ attested since April, 1871, originally American English, from the 18th-century expression as true as a die, from the 16th-century expression as smooth as a die, referring to the osseous substance that dice were formerly created with.
• Possibly connected with, or confused with, the metal-cutting tool called a die.

Pronunciation

• Audio (AU)

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Adjective

straight as a die (not comparable)

1. (simile) Completely or totally straight.