As sure as eggs is eggs

Meaning

Absolutely certain.

Usage

Used to reassure or guarantee an outcome.

Origin & History

Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.

Rhyming folk expression from British English emphasizing certainty.

Found in British print as early as the late nineteenth century.