Last Updated：2025/11/20

Lacking something essential; often construed with in. / Insufficient or inadequate in amount.

音声機能が動作しない場合はこちらをご確認ください

See correct answer

deficient

Source Word

deficient

IPA(Pronunciation)

Lacking something essential; often construed with in. / Insufficient or inadequate in amount.

Japanese Meaning

必要な要素が不足している / 不足している / 不十分な / 欠陥がある

The renovator found the old wiring deficient and immediately shut off the power to prevent a fire.

修理業者は古い配線が不十分であることに気づき、火災を防ぐために直ちに電源を切った。

Sense（1）

Lacking something essential; often construed with in.

They were deficient in social skills.

Sense（2）

Insufficient or inadequate in amount.

Sense（3）

more deficient

（ comparative ）

most deficient

（ superlative ）