đọng, ứ (nước); tù hãm, phẳng lặng như nước ao tù (đời sống...)
đình trệ, đình đốn (việc buôn bán...)
mụ mẫm (trí óc)
languish, idle, vegetate, deteriorate, degenerate, decline, go to seed or pot, decay, rust, moulder, decompose, spoil, rot:
He felt he had stagnated in a backwater of civilization for far too long.
Advanced English Dictionary
+verb[V] 1 to stop developing or making progress: Profits have stagnated. + I feel I'm stagnating in this job. + Businesses must adapt to change or stagnate. 2 to be or become stagnant: The water in the pond was stagnating. stagnation noun [U]: a period of economic stagnation