worst of all

idiom

—used to refer to the least pleasant or appealing part of something that has many bad parts

I forgot my backpack, was late for class, and worst of all, I discovered I'd studied the wrong material for the test.

Examples of worst of all in a Sentence

Recent Examples on the Web

The Permian-Triassic extinction event, around 252 million years ago, is considered worst of all. —Riley Black, Smithsonian Magazine, 12 July 2024

There’s also way too many flashbacks (including an entire flashback episode), and, worst of all, hope. —Ben Travers, IndieWire, 10 July 2024

Much of that apprehension comes down to not understanding how airplanes operate, especially in less-than-desirable weather conditions, including rain, wind, and, worst of all, cold temperatures that can add a layer of frost to an aircraft. —Stacey Leasca, Travel + Leisure, 7 July 2024

What manner to present yourself in a TV network and worst of all how management permits that dress code! —Ticked Off, Orlando Sentinel, 19 June 2024