inefficient
Translation
inefficient
Examples
The old heating system is very inefficient.
The old heating system is very inefficient.
He is an inefficient worker.
He is an inefficient worker.
Grammar Patterns
inefficient ((at -ing)) not achieving maximum productivity at doing something He is inefficient at managing his time.
Similar Words
Synonyms: wasteful, unproductive; Antonyms: efficient, productive
Etymology
From 'in-' (not) + 'efficient' (working well without waste). An adjective meaning 'not efficient'.
Memory Tips
Like the others, 'in-' means 'not'. Picture something or someone wasting time or energy.