In Islam, idolatry and polytheism, both of which are regarded as heretical. The Quhamzahrān stresses that God does not share his powers with any partner (sharik) and warns that those who believe in idols will be harshly dealt with on the Day of Judgment. The concept of shirk has broadened considerably throughout the dogmatic development of Islam, and it has come to be used as the opposite of tawhsubdotīd (the oneness of God). Different grades of shirk have been distinguished by Islamic law; they include the belief in superstition, belief in the power of created things (e.g., reverencing saints), and belief in those who profess to know the future—all of which pale beside polytheism in seriousness.

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• "Shirk", to avoid work or other responsibilities because of laziness
• Shirk (Islam), in Islam, the sin of idolatry or associating beings or things with Allah
• "Shirk break", a synonym for coffee break