Deficient

/dɪˈfɪʃənt/

adjectiveIntermediateCommonGeneral

Definitions

1

Lacking something necessary; inadequate or insufficient.

/dɪˈfɪʃənt/

adjectivenegativeIntermediate
General

Lacking an essential quality or element; not up to a certain standard.

The diet was deficient in essential vitamins and minerals.

💡 Simply: Imagine you're baking cookies, but you run out of chocolate chips. If your cookies have a *deficient* amount of chocolate, they won't be as good as they could be. It means something is missing or not quite enough.

👶 For kids: Not having enough of something you need.

More Examples

2

The investigation revealed deficient security measures.

3

Her performance was deficient due to lack of preparation.

How It's Used

Medical

"The patient was iron-deficient, leading to anemia."

Financial

"The company's financial reports revealed a deficient cash flow."

Educational

"The student's essay was deficient in supporting evidence."

From Latin *deficiens*, present participle of *deficere* "to fail, be lacking," from *de-* "away, off" + *facere* "to do, make." The word entered English in the late 14th century.

The word *deficient* has been used in English since the late 14th century, initially in a broader sense of being lacking or failing. Its use in financial and medical contexts developed later.

Memory tip

Think 'de' (lacking) + 'ficient' (enough) – when something is *deficient*, it isn't enough!

deficentdeficentdefecient

Usage

30%Spoken
70%Written