Dictionary.com
Thesaurus.com
Jump To:
  • sin
    sin
    noun
    transgression of divine law.
  • sīn
    sīn
    noun
    the 12th letter of the Arabic alphabet.
  • Sin
    Sin
    noun
    the Akkadian god of the moon: the counterpart of the Sumerian Nanna.
  • SIN
    SIN
    abbreviation
    social insurance number
Synonyms

sin

1 American  
[sin] / sɪn /

noun

  1. transgression of divine law.

    the sin of Adam.

    Synonyms:
    violation, trespass, misdeed
  2. any act regarded as such a transgression, especially a willful or deliberate violation of some religious or moral principle.

    Synonyms:
    wickedness, wrong
  3. any reprehensible or regrettable action, behavior, lapse, etc.; great fault or offense.

    It's a sin to waste time.


verb (used without object)

  • sins,
    present (3rd person singular)
  • sinned,
    past participle,  past
  • sinning
    present participle
  1. to commit a sinful act.

    Synonyms:
    trespass, transgress
  2. to offend against a principle, standard, etc.

verb (used with object)

  • sins,
    present (3rd person singular)
  • sinned,
    past participle,  past
  • sinning
    present participle
  1. to commit or perform sinfully.

    He sinned his crimes without compunction.

  2. to bring, drive, etc., by sinning.

    He sinned his soul to perdition.

sin 2 American  
[seen] / sin /

noun

  1. the 22nd letter of the Hebrew alphabet.

  2. the consonant sound represented by this letter.


sin 3 American  

abbreviation

Trigonometry.
  1. sine.


sīn 4 American  
[seen] / sin /

noun

  1. the 12th letter of the Arabic alphabet.


Sin 5 American  
[seen] / sin /

noun

  1. the Akkadian god of the moon: the counterpart of the Sumerian Nanna.


sin 1 British  
/ sɪn /

preposition

  1. a Scot dialect word for since

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

sin 2 British  
/ saɪn /

abbreviation

  1. sine

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

sin 3 British  
/ siːn /

noun

  1. a variant of shin, the 21st letter in the Hebrew alphabet (שׂ), transliterated as S See shin 2

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

sin 4 British  
/ sɪn /

noun

  1. theol

    1. transgression of God's known will or any principle or law regarded as embodying this

    2. the condition of estrangement from God arising from such transgression See also actual sin mortal sin original sin venial sin

  2. any serious offence, as against a religious or moral principle

  3. any offence against a principle or standard

  4. informal (of an unmarried couple) to live together

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. theol to commit a sin

  2. (usually foll by against) to commit an offence (against a person, principle, etc)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
SIN 5 British  

abbreviation

  1. social insurance number

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

sin Scientific  
  1. Abbreviation of sine


sin Idioms  
  1. see live in sin; more sinned against than sinning; multitude of sins; ugly as sin; wages of sin.


Synonym Usage

See crime.

Other Word Forms

Derived Forms

Inflected Forms

Participles

Conjugated Forms

Present

Past

Future

Etymology

Origin of sin1

First recorded before 900; Middle English noun sinne, sin(e), sen(ne), Old English syn(n) “moral or religious offense, misdeed”; akin to German Sünde, Old Norse synd, Latin sōns (inflectional stem sont- ) “guilty,” literally “that man being the one”; the verb is derivative of the noun; the Germanic and Latin forms all being present participle forms of the root es- “to be”; see origin at am ( def. )

Origin of sin2

First recorded in 1895–1900; from Hebrew śīn

Origin of sīn4

From Arabic

Explanation

You might not want to be the one at the party who takes the last piece of cake, but then again, it would be a sin to let it sit there, uneaten. A sin is a deeply regrettable action. The most common definition of sin is religious: it's an immoral act against God or divine law. Any serious offense, even if it's not religious, can be called a sin, and so can something less serious if you're talking about it in a joking way, as in, "You've got to buy those shoes — it would be an absolute sin not to." In math, sin is the abbreviation of sine, the trigonometric function.

Keep Reading on Vocabulary.com

Vocabulary lists containing sin

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

When we encounter a story as ancient as Odysseus’s, we directly encounter the hubris — a favorite sin among the ancient Greeks — of believing that our concerns, categories and even identities are timeless.

From Salon Jul. 22, 2026

One of Odysseus’ defining triumphs becomes, in Nolan’s telling, something closer to an original sin.

From Los Angeles Times Jul. 21, 2026

She had converted to Catholicism in the 1990s, telling The Times: "To have a church which calls a sin a sin and has done with it is a blessed relief."

From BBC Jul. 10, 2026

On a recent episode of What Next, Lizzie O’Leary spoke to Nagle about how America’s original sin is written into who we are today.

From Slate Jul. 3, 2026

For medieval Christians, the existence of such a chain of humans provided a most powerful and original understanding of original sin.

From "The Gene" by Siddhartha Mukherjee

Sī koment underwīlen her die baȥ dā heime möhten sīn.

From A Middle High German Primer Third Edition by Wright, Joseph

Sine, sīn, n. a straight line drawn from one extremity of an arc perpendicular to the diameter that passes through the other extremity.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

I, sink, 76. sigenunft, sf. victory. sīhte, aj. shallow. silber, sn. silver. sim = si im. sin, sm. sense, mind, feeling; courage. sīn, pr. his; sīn sëlbes, of himself, 5, 11, 67.

From A Middle High German Primer Third Edition by Wright, Joseph

En er hǫfðingjar rœddu þetta milli sīn, sem nū er sagt, þā sā þeir, hvar sigldu þrjū skip all-mikil, ok fjōrða sīðast, ok var þat Ormrinn langi.

From Icelandic Primer with Grammar, Notes and Glossary by Sweet, Henry

Dō brāhte man die vrouwen     dā si in ligen vant. si huop sīn schœne houbet     mit ir vil wīȥen hant; dō kuste s’ alsō tōten     den edelen ritter guot.

From A Middle High German Primer Third Edition by Wright, Joseph

She no longer has contacts she can reach in Sittwe, or in Sin Tet Maw, the Arakan Army-controlled village from where the boats departed.

From BBC Jul. 17, 2026

Thousands who flew into Sin City on the insurer’s dime were treated to a Pink concert, a Jimmy Fallon-led singalong and selfies with the “Jake from State Farm” actor.

From The Wall Street Journal Jun. 17, 2026

But analysts are growing more confident in a Las Vegas comeback, and MGM also isn’t as dependent on Sin City as some competitors.

From Barron's Jun. 1, 2026

As he drove to Sin City for bowling tournaments, Honell would stop and “drop a few coins” into the slot machines.

From Los Angeles Times May 8, 2026

I was uninjured, and since pride is a Deadly Sin which I feel I generally eschew, absolutely nothing was hurt.

From "A Confederacy of Dunces" by John Kennedy Toole

Pura Casilla, the governor of San Cristobal province, told Noticias SIN that the explosion occurred in a commercial area and greatly affected businesses near the town center.

From Seattle Times Aug. 15, 2023

The description for the folder Correspondence SIN reads:

From The Guardian Mar. 23, 2017

On most calculators, you will need to push the 2ND button and then the SIN button to bring up the function.

From Textbooks Feb. 13, 2015

SIN does not have preferential booking at any studios.

From New York Times Dec. 17, 2014

"If you already have a SIN, you can just give it to me, along with your secret identity's bank information, and we can have your pension processed in a week or two."

From Super Man and the Bug Out by Doctorow, Cory

In a novel full of insufferable characters interfering with romantic soulmates, Mary commits the sins of both pedantry and priggishness.

From Salon Jun. 25, 2026

The original idea was to fund the Sagrada Família through donations by people atoning for their sins.

From The Wall Street Journal Jun. 7, 2026

"If you list my sins, I sound like the worst person on Earth," he said in a TED interview in 2022.

From BBC Jun. 4, 2026

Those are the three deadly sins of trading.

From MarketWatch May 26, 2026

It was my sins that were as scarlet, not Lightfoot’s.

From "Cold Sassy Tree" by Olive Ann Burns

Eve then offers the fruit to Adam, and, having both sinned, they realize their nakedness, are ashamed and make clothing.

From Salon May 17, 2026

Bless me, Father, for I have sinned: In the past few weeks I have watched the trailer for “Conclave” so many times it could be considered gluttony.

From Los Angeles Times Sep. 6, 2024

His lawyers argued that while he had engaged in bad behavior and sinned against his wife, he had not broken the law.

From Washington Post Apr. 2, 2023

Even if your daughters are, in some sense, more sinned against than sinning, you could reasonably worry that putting resources in their hands will allow them to support destructive causes.

From New York Times Mar. 1, 2022

She had defeated him—she had sinned against his empire and now would emerge victorious.

From "Throne of Glass" by Sarah J. Maas

Crusaders came to expect standard privileges like the indulgence, a means to reduce the penance owed for sinning by giving money directly to the church or paying for masses or other clerical services.

From Textbooks Apr. 19, 2023

Even if your daughters are, in some sense, more sinned against than sinning, you could reasonably worry that putting resources in their hands will allow them to support destructive causes.

From New York Times Mar. 1, 2022

He insists he is a man more sinned against than sinning and is working with lawyers to clear his name.

From BBC Jul. 13, 2021

I’ve been oppressed by all these facts and evidence that dinned against My simple claim that I am not more sinning than I’m sinned against.

From Washington Post Jul. 7, 2021

She told me about Hell and sinning and how we go to church to learn how to live in God’s image.

From "P.S. I Miss You" by Jen Petro-Roy

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training