inadequate

adjective

in·​ad·​e·​quate (ˌ)i-ˈna-di-kwət 

: not adequate : not enough or good enough : insufficient

inadequate equipment

also : not capable

was inadequate as a leader

inadequately adverb

inadequateness noun

Synonyms

• deficient
• insufficient
• lacking
• low
• scarce
• short
• shy
• wanting

Examples of inadequate in a Sentence

These supplies are inadequate to meet our needs.

We were given very inadequate information.

I felt inadequate to the task.

Her brother's success and popularity always made her feel inadequate.

Recent Examples on the Web

Furthermore, decades of secondary math teacher shortages means that many positions have been filled by individuals teaching on substandard credentials who have inadequate preparation in math or pedagogy or both. —Linda Darling-Hammond, Forbes.com, 28 June 2025

Beyond affecting gut health, inadequate enzyme activity can also lead to chronic inflammation and may even contribute to autoimmune problems. —Daryl Austin, USA Today, 27 June 2025

The Iranian regime has learned that its conventional defenses are inadequate to protect against attacks by the United States and Israel. —Elizabeth Shackelford, Chicago Tribune, 27 June 2025

Physical health plays a crucial role too -- being overweight and having inadequate physical activity can negatively impact fertility. —Doc Louallen, ABC News, 27 June 2025

Word History

First Known Use

1671, in the meaning defined above

Rhymes for inadequate

• adequate

Kids Definition

inadequate

adjective

in·​ad·​e·​quate (ˈ)in-ˈad-i-kwət 

: not adequate : not enough or not good enough

an inadequate supply of food

inadequately adverb

Medical Definition

inadequate

1 of 2 adjective

in·​ad·​e·​quate -i-kwət 

1

: not adequate : deficient

an inadequate dose

inadequate perfusion

inadequate diets

2

: lacking the capacity for psychological maturity or adequate social adjustment

an inadequate personality

inadequately adverb

inadequate

2 of 2 noun

: one who is inadequate especially in terms of social adjustment