inefficient in Bulgarian
inefficient in Bulgarian
безполезен
Not efficient; not producing the effect intended or desired; inefficacious
безрезултатен
Not efficient; not producing the effect intended or desired; inefficacious
некадърен
Incapable of, or indisposed to, effective action; habitually slack or unproductive; effecting little or nothing
неспособен
Incapable of, or indisposed to, effective action; habitually slack or unproductive; effecting little or nothing