What is another word for was on one case?
Pronunciation: [wɒz ˌɒn wˈɒn kˈe͡ɪs] (IPA) 
The phrase "was on one case" refers to a person being focused or dedicated on a specific task. There are several synonyms that can be used to convey the same meaning, including "deeply engrossed," "completely absorbed," "singularly focused," "intensely concentrated," "entirely fixated," or "totally dedicated." These words all indicate that someone is giving their full attention and energy to a specific task or goal. It's important to choose the right synonym depending on the context and degree of intensity required, but all of these options can effectively convey the idea of someone being totally committed to a particular task or project.
