This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Not efficient, as:

adj. Lacking the ability or skill to perform effectively; incompetent: an inefficient worker.

adj. Not producing the intended result; ineffective: an inefficient campaign against illegal drugs.

adj. Wasteful of time, energy, or materials: an inefficient design; outdated and inefficient methods.

adj. Not efficient; not producing the effect intended or desired; inefficacious; as, inefficient means or measures.

adj. Incapable of, or indisposed to, effective action; habitually slack or remiss; effecting little or nothing; as, inefficient workers; an inefficient administrator.

adj. Not efficient; not producing the effect intended or desired, or achieiving the effect by unnnecessary and excessive expenditure of resources; inefficacious.

adj. Incapable of, or indisposed to, effective action; habitually slack or remiss; effecting little or nothing

Not efficient; not producing or not capable of producing the desired effect; incapable; incompetent; inadequate: as, inefficient measures; an inefficient police.

adj. lacking the ability or skill to perform effectively; inadequate

adj. not producing desired results; wasteful

"SHARIF ABDEL KOUDDOUS: Well, on Monday, former US president Bill Clinton fired back and railed against what he called inefficient spending of AIDS funds and said many countries are misspending foreign aid."

incompetent    wasteful    uneconomical   

efficient   

inefficacious    ineffectual   

Omniscient    beneficent    coefficient    deficient    efficient    insufficient    omniscient    proficient    self-sufficient    sufficient   

incompetent    wasteful    unsatisfactory    corrupt    inadequate    ineffective    unfair    unable    unreliable    inappropriate