What is another word for conking out?
Pronunciation: [kˈɒnkɪŋ ˈa͡ʊt] (IPA) 
When something "conks out," it means that it experiences a sudden breakdown or failure. There are numerous synonyms for this phrase that can be used to convey a similar sense of malfunction or shutdown. For example, the terms "crashing," "failing," "dying," and "capping out" all suggest that a system or machine has abruptly stopped working. Similarly, phrases like "throwing in the towel," "calling it quits," or "throwing in the sponge" can be used to describe a person giving up or surrendering. No matter which synonym you use, the phrase "conking out" conveys a sense of disappointment and frustration when something stops functioning properly.
