Simple Definition of deadly sin

from our Learner's Dictionary

deadly sin

noun

plural deadly sins
: one of seven sins that in the Christian religion are considered to be very serious and are believed to cause other sins

Note: The seven deadly sins are usually considered to be pride, envy, lust, gluttony, greed, anger, and sloth.

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“Deadly sin.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/deadly%20sin. Accessed 23 Jun. 2026.

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