sin
US /sɪn/
UK /sɪn/

1.
an immoral act considered to be a transgression against divine law
:
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He confessed his sins to the priest.
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Pride is considered one of the seven deadly sins.
2.
a regrettable or shameful act, omission, or state of affairs
:
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It's a sin to waste good food.
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It would be a sin to miss this opportunity.
1.
commit a sin; transgress against divine or moral law
:
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He felt guilty for having sinned.
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To sin is to go against God's will.