to lag behind

to remain in a place due to circumstances or obstacles that prevent one from leaving

to clog up, block flow, or become silted up

to cease to move or progress; to become stagnant or reach a standstill

lifeless or lacking expression, typically referring to a person's gaze or appearance

to have poor sales or be unmarketable, often resulting in an accumulation of stock

stuck and not moving forward; in a state of stagnation or at a standstill

stagnation of qi (TCM)

to impede progress or put off an action; procrastination

to stop moving or lose vitality, often describing expressions, atmospheres, or focus

stagflation (i.e. simultaneous inflation and stagnation)

a penalty fee charged for the late payment of taxes, bills, or other financial obligations

obstructed or blocked by the accumulation of silt or sediment

to obstruct; to be blocked or stagnant

dull (of complexion)

lacking flow, spirit, or creative vitality in writing, art, or style

demurrage charge in shipping

stationary front (meteorology)

to be late in paying taxes, fees, or other debts; to be in arrears

(in Chinese medicine) stasis of blood or other fluids

to have a lifeless look in one's eyes

stagnant, clumsy, or not flowing smoothly in expression, speech, or writing

high-sounding and impractical