Inefficient

Part of speech: adjective

Pronunciation: /ˌɪn.ɪˈfɪʃ.ənt/

Definitions

1. Wasting time, energy, or resources due to poor organization or methods, resulting in less productivity than should be achieved
2. Failing to utilize time, energy, or resources effectively, leading to a lower output than what is realistically possible
3. Characterized by a lack of effectiveness in using time, energy, or resources, causing reduced productivity compared to potential levels

Etymology: "Inefficient" is a plain compound: the prefix "in-", meaning "not," attached to "efficient." The prefix descends from a very old root meaning "not," which passed into Latin as "in-" and entered English through Middle English. The adjective is therefore a straightforward negation of "efficient," rather than a word with a dramatic detour. The base word "efficient" comes from Latin "efficiens," the present participle of "efficere," meaning "to accomplish" or "to bring about." Its core sense was of producing a result or causing something to happen, which is why the word still carries the idea of effective action. Negating it with "in-" yields the sense of falling short of that productive capacity.

Synonyms: ineffective, unproductive, wasteful, sluggish, inept

Antonyms: efficient, effective, productive, capable, competent