had been plummeting
Past perfect progressive conjugation of plummet.

plummet

Popularity
500+ learners.
Because of agricultural subsidy policies, however, cotton prices had been plummeting.
Sin embargo, por las políticas de subvención a la agricultura, los precios del algodón se desplomaron.
Other Dictionaries
Explore the meaning of plummet in our family of products.
Word of the Day
to enjoy