0 Stagnant water or air does not flow and becomes dirty and smells unpleasant. -- stagnante
a stagnant pond un laghetto stagnante
1 A stagnant economy, society, or organization does not develop or grow. -- stagnante
2 (of water) standing still rather than flowing and therefore usually dirty -- stagnante
a stagnant pool.
3 dull or inactive -- stagnante
Our economy is stagnant.