stagnant
Lacking flow or motion, and thus usually not fresh or healthy; decaying through stillness.
Other meanings
Without activity, change or progress, or excitement in an unhealthy manner; inactive, stale.
“Their love had turned stagnant.”
Example sentences
Word history
From Latin "stagnans".
Where this comes from
This definition is adapted from “stagnant” on Wiktionary, by its contributors; example sentences are from Tatoeba, credited to their authors above, published under CC BY-SA 4.0. This page is published under the same licence.