The stagnant pond, lacking any inflow or outflow, developed a thick layer of algae over the summer.
这个停滞的池塘没有流入或流出，整个夏天长出了一层厚厚的藻类。
Which choice best defines “stagnant”?
B — Motionless; inactive; static. “stagnant” means motionless; inactive; static.
Which word means “motionless; inactive; static”?
C — stagnant. “stagnant” means motionless; inactive; static.
stagnant — motionless; inactive; static. In Chinese: 停滞的，不流动的.
stagnant is pronounced /ˈstæɡnənt/.
The stagnant pond, lacking any inflow or outflow, developed a thick layer of algae over the summer. (这个停滞的池塘没有流入或流出，整个夏天长出了一层厚厚的藻类。)
motionless, inactive, static — all close in meaning to stagnant (motionless; inactive; static).
flowing, dynamic — each the opposite of stagnant (motionless; inactive; static).
Yes. stagnant is on the SAT Prep Easy list — mid-frequency academic words that do get tested. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
stagn (static, dead water) + ant → stagnant.