Inefficient antonyms | adjectives

Antonyms for Inefficient as a Adjective

• efficient

  incompetent, wasteful
• effective

  incompetent, efficient
• competent

  incompetent, wasteful
• capable

  incompetent, wasteful
• useful

  productive, wasteful
• able

  incompetent, wasteful
• expert
• effectual
• efficacious
• skillful
• productive
• dexterous
• neat
• tidy
• fit
• strong
• sound
• helpful

  productive
• profitable
• successful
• worthwhile
• expedient
• operant
• ultraefficient
• skilled
• tasty
• organized
• availing
• beneficial