Slacked

The teacher slacked on the assignment deadline.

The government slacked on regulating the industry's environmental impact.

The slacked muscles in his arms made it hard for him to lift the heavy weights.

The slacked sails on the boat made it difficult to navigate through the storm.

The slacked expression on his face suggested that he was not interested in the conversation.

She slacked her pace when she realized that she was lost.

The noise from the party slacked after midnight.

The water pressure slacked when too many people were using it at once.