IPA: //haɪpəˈθɛtɪkəl//
KK: /haɪpəˈθɛtɪkəl/
Relating to a situation or idea that is based on a guess or theory rather than something real or certain.
In a hypothetical scenario, we can explore what might happen if we changed the rules.
Hypothetical is formed from "hypo-" (meaning under or less than) and "tithenai" (Greek for to place or put). The word refers to something that is placed under consideration or assumed for the sake of argument.
Think of something that is 'placed under' consideration ('hypo-') — that's why hypothetical refers to an assumption or a theory.