inefficient(not efficient; not producing the effect intended or desired) adjective [UK: ˌɪ.nɪ.ˈfɪʃnt] [US: ˌɪ.nə.ˈfɪ.ʃənt]You're inefficient. = Lei è inefficiente.
inexpedient(not tending to promote a purpose) adjective [UK: ˌɪ.nɪk.ˈspiː.dɪənt] [US: ˌɪ.nɪk.ˈspiː.dɪənt]