The meaning of INEFFICIENT is not efficient. How to use inefficient in a sentence.

INEFFICIENT definition: not efficient; unable to effect or achieve the desired result with reasonable economy of means. See examples of inefficient used in a sentence.

INEFFICIENT definition: 1. not organized, skilled, or able to work in a satisfactory way: 2. working in a way that wastes…. Learn more.

Inefficient people, organizations, systems, or machines do not use time, energy, or other resources in the best way. Their communication systems are inefficient in the extreme. ...the closure of outdated …

inefficient (ˌɪnɪˈfɪʃənt) adj 1. unable to perform a task or function to the best advantage; wasteful or incompetent 2. unable to produce the desired result

Definition of inefficient adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Dec 14, 2025 · inefficient (comparative more inefficient, superlative most inefficient) Not efficient; not producing the effect intended or desired; inefficacious.