1. not enough in quantity, quality, or degree; inadequate

Examples

• The evidence was insufficient to convict the defendant.
• She had insufficient funds to buy the car.
• The lighting in the room was insufficient for reading.
• His preparation was insufficient for the difficult exam.
• The company’s resources were insufficient to complete the project.
• The doctor said her sleep was insufficient for good health.
• There was insufficient time to finish all the tasks.