Definition

Not enough in quantity, quality, or degree; lacking what is necessary.

Example

The report was rejected due to insufficient data.

Conversation

I just got my exam results, and I'm a bit worried.

What happened? Did you do poorly?

Yeah, I think my study time was insufficient this semester.

That can happen, but you can always improve for next time!

Synonyms & Antonyms

Root Explanation

Insufficient is formed from "in-" (meaning not) and "sufficere" (meaning to be enough or to meet). The word describes a state of not being enough or lacking in quantity or quality.

Memory Tip

Think of 'not' ('in-') being 'enough' ('sufficere') — that's why insufficient means not enough.

Visually Confused Words