What is another word for working principle?
Pronunciation: [wˈɜːkɪŋ pɹˈɪnsɪpə͡l] (IPA) 
The term "working principle" describes the underlying mechanism or methodology by which something operates or functions. There are several synonyms that can be used in place of this term, including operating principle, functional basis, underlying mechanism, operational mechanism, and modus operandi. Each of these synonyms effectively conveys the idea that there is a foundational system or process at work that enables the thing in question to perform its intended purpose. By using these synonyms, writers or speakers can add variety and nuance to their language, while still accurately conveying the idea of how something works.
