niedostateczny in English:

Our resources are insufficient.

His knowledge of geography is insufficient.

The district attorney is unwilling to proceed due to insufficient evidence.

The ATM displayed the following error message: "You have insufficient funds to complete this transaction".

insufficient data

Don't read under insufficient light, for it is bad for your eyes.

Life is the art of drawing sufficient conclusions from insufficient premises.

The Christian Religion not only was at first attended with miracles, but even at this day cannot be believed by any reasonable person without one. Mere reason is insufficient to convince us of its veracity.

The students complained that they were given insufficient time for The test.

hypocalcemia (insufficient calcium in blood)

The project coud not go ahead owing to insufficient funds.

Security measures put in place for the reopening were insufficient.

The prisoner was released because the police had insufficient proof of his guilt.

Rupert was unable to draw any money from the ATM because there were insufficient funds in his account.

There is a good number of problems for which the Karush-Kuhn-Tucker conditions are insufficient to guarantee optimality, but this doesn't change the fact that these conditions are an indispensable tool for doing optimization.

I find the plan to be unsatisfactory in several ways.

Barter, however, was a very unsatisfactory system because people's needs seldom matched exactly.

It's very unsatisfactory that are hotel room is so dirty.

The result was unsatisfactory to him.

Tom's diet is deficient in protein.

Excuse me, my tool set is deficient.

An auditor is not allowed to provide a deficient report.

A diet deficient in €‹vitamin B12 may cause anemia and nerve damage.

But it’s quite hard not to feel a bit deficient in the Department of Brain Cells, growing up next to a younger sister who was not just moved up a year into my class, but then to the year above.

His theory is deficient in several respects.

I'm deficient in calcium.

And when a mind is too deficient in understanding, the resulting gap is often filled with resentment.

It identified 16 countries as having deficient information-sharing practices and presenting national security concerns,

The young engineer was deficient in experience.