IPA: /ˈhoʊldʌp/
KK: /ˈhoʊldʌp/
A situation where someone is robbed, often with a weapon, or a delay caused by an unexpected event.
The bank experienced a holdup during the afternoon, causing a long wait for customers.
Holdup is formed from "hold" (from Old English "healdan", meaning to grasp or keep) and "up" (meaning in a higher position or direction). The word "holdup" refers to the act of holding something in a raised position or, in a colloquial sense, a robbery where something is held up at gunpoint.
Think of 'holding' something 'up' in the air — that's why a holdup refers to something being raised or a situation where something is taken by force.
No commonly confused words.