The retardment of the project was due to unforeseen circumstances.

The retardational effect of the medication was evident in the patient's slowed reaction time.

The process is retardable, allowing for adjustments to be made.

The construction project faced several retardments.

The retardancy of the material is crucial for fire safety.

The retardancies in the system caused delays in the project.

He made a retardical mistake.

The retardances of the materials were measured using a spectrophotometer.

The retardency of the material is crucial for fire safety.

He walked retardively, slowing down the progress of the group.