He failed the exam due to a lack of preparation.
The lack of rain this summer has caused serious problems for farmers.
Her speech was lacking in energy.
This report is lacking in details.
The team is lacking in confidence.
Their service is lacking in quality.
The argument is lacking in evidence.
This area is lacking in public parks.
His explanation was lacking in clarity.
The design is lacking in accessibility.
They suffered from a lack of clean water.
They were upset about the lack of communication.