impractical
adj. B2 Upper Intermediate US //ˌɪmˈpɹæktəkəɫ// UK //ɪmpɹˈæktɪkəl// im·prac·ti·cal
adj. not sensible or realistic to do in a real situation. You use this to describe ideas or objects that are difficult to use or carry out.
adj. not sensible or realistic; difficult to implement or maintain in practice. Often describes ideas, plans, or physical objects that lack utility in a specific context.
High heels are impractical for a long walk in the park.
The architect's design was beautiful, but the glass roof proved impractical because it made the building too hot.
While the theoretical model was flawless, the sheer volume of data required made it impractical for real-time applications in the field.
From im- + practical.
Usage
Often used predicatively after linking verbs like 'be', 'seem', or 'prove'.