hypothetical /ˌhaɪpəˈθɛtɪkəl/adjective 2noun 1forms 3 adjective2 •Based upon a hypothesis; conjectural. •Conditional; contingent upon some hypothesis/antecedent. noun1 •A possible or hypothetical situation or proposition.These hypotheticals serve no purpose until we have more information. formshypotheticals · more hypothetical · most hypothetical