Cutting funding for education can have a deleterious impact on long-term economic growth.

The pollutant affected the river's ecosystem deleteriously, causing fish populations to decline rapidly.

The deletery smoke from the abandoned chemical plant sickened wildlife and villagers alike.

The villagers whispered that the strange fog was a deletery, appearing only before the harvests failed.

The report listed several deleteries that undermined public health.

By comparing mutant strains, researchers identified the yeast deleteome responsible for the loss of metabolic flexibility.