1. to remain inactive, motionless, or unchanged; to lack development or progress
The economy has been stagnant for months.
A economia tem estado estagnada por meses.
2. of water or air: to not flow or circulate; to become foul or polluted
The pond water became stagnant without proper aeration.
A água da lagoa ficou estagnada sem aeração adequada.
3. to show no activity, interest, or enthusiasm
His career has been stagnant since he stopped learning new skills.
Sua carreira tem estado estagnada desde que parou de aprender novas habilidades.