Definition & Meaning of "ticked off"in English

What is the origin of the term "ticked off" and how is it used?

"Ticked off" is an English informal expression that appeared in the mid-20th century, likely in American English around the 1940s–1950s. It comes from the idea of marking or "ticking" a list to show something has been noted or registered, metaphorically extending to registering irritation or anger. The phrase is used to describe someone who is really angry or irritated, often in informal speech among adults. It is mildly derogatory but not vulgar, and is generally socially acceptable in casual contexts.