IPA: /ˈkʌm.ər.bʌnd/
KK: /ˈkʌmərˌbʌnd/
A wide piece of fabric worn around the waist, often with formal clothing, that can be pleated and is used instead of a vest.
He wore a black cummerbund with his tuxedo to the wedding.
Cummerbund → The word originates from the Persian "kamarband" (meaning waist band). It refers to a wide sash worn around the waist, typically as part of formal attire.
Think of a 'waist band' in Persian, which helps you remember that a cummerbund is a band worn around the waist.
No commonly confused words.