How to say "not enough, insufficiently" in Russian?

Недостаточно

"not enough, insufficiently" is Недостаточно in Russian.

Недостаточно means "not enough, insufficiently" in English.

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Word #1800 of 4,000 by frequency in Russian — level B1.

Example

У нас недостаточно денег на новую машину.

We don't have enough money for a new car.