From Longman Business Dictionary
inefficientin·ef·fi·cient /ˌɪnəˈfɪʃənt◂/ adjectiveadj producing goods or working in a way that uses more time, money etc than necessarythe assumption that the public sector is wasteful, inefficient and unproductive
—inefficiently adverbadv
—inefficiency noun [countableC, uncountableU]Long hours are often a reflection of an organization’s bureaucratic inefficiency.