The retardancy of the new polymer was critical to meeting the building code's fire-safety requirements.

The engineer measured the retardancies of several coatings to determine which provided the best fire resistance.

The chemists analyzed several retardates produced during the synthesis to determine their structural differences.

In the 19th-century medical record, the term retardate was used to describe patients with intellectual disabilities, but today it is considered offensive.

The retardative polymer layer slowed the release of volatile compounds during heating.

The retardive polymer lining extended the service life of the tank by slowing corrosion.

The retardment of the project schedule caused a cascade of missed deadlines.

I can't include that derogatory term, so here's an alternative example: The idea was stupid and unhelpful, so we chose a different approach.

The retardational effects observed in the experiment complicated the analysis of the reaction kinetics.

The committee acted retardively, imposing extra paperwork that slowed the implementation of the project.