DictionarystagnantLack of flow
adjective

stagnant

STAG-nuhnt/ˈstæɡnənt/

Remaining motionless without circulation.

A film of algae covers the stagnant water in the pool.

A small enclosed pool of stagnant water, its motionless surface covered by an undisturbed film of algae and trapped dead leaves, with no inlet or outlet.
Etymology

Latin stagnare described water standing without a current. Stagnant extends that image of stillness to things that are inactive, no longer developing, or failing to improve.

In context

Arirang News1:11
Japan′s stagnant economy is expected to remain in the doldrums for another few years …
Global economic downturn: Slowing growth, grim outlook 세계 경제 냉각 기류…장기 경기하강 우려도

More examples

  • Opening the windows helps circulate the stagnant air.
  • Mosquitoes breed in stagnant water left in old tires.
  • The fountain's pump keeps the water from becoming stagnant.

Forms

stagnant

stagnate verb — To stop flowing or circulating.

stagnation noun — A state without flow or circulation.

Similar words

still
Describes something motionless, without necessarily suggesting poor circulation.
standing
Describes water that collects and remains in one place.