as sin

adverb

To a great extent or degree; very.

“There is no way you'll lift it yourself, it's heavy as sin.”

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Meanings

adverb
  1. postpositionalTo a great extent or degree; very.

    There is no way you'll lift it yourself, it's heavy as sin.

    3 more examples

    CAPTAIN: I understand, and I'll patronize you. I'll take every ticket, and pay you cash, and Jedidah shall come and see the beautiful rival. / JEDIDAH: Beautiful! She's as homely as sin.

    1864, O. E. [Oliver Everett] Durivage, The Stage-Struck Yankee

    As for Janie, she stood there, petrified, and now her face had become as ugly as sin, and as vicious, and as malevolent.

    1945, Taylor Caldwell, Wide House

    The clouds covered a liquid surface black as sin.

    2015, John C. Wright, The Architect of Aeons, 1st edition, New York

Origin

Generalization of previous similes, e.g. evil as sin, common as sin, imputable as sin.

Full word history & related roots →
Cite this entry
APA

as sin. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/as%20sin

MLA

“as sin.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/as%20sin. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “as sin,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/as%20sin.

Source: as sin on Wiktionary, CC BY-SA 4.0.