as sin

Adverb

Meaning

as sin

(postpositive) To a great extent or degree; very.

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

Source: en.wiktionary.org

Synonyms

like sin

Close letter words and terms

as simple as abc as simple as that as simply as possible as slick as a whistle as slippery as an eel as slow as molasses