Common words that rhyme with stagnant include indignant, malignant, pregnant, resonant, consonant, dominant, remnant, dissonant, instant, significant, brilliant, courant, unimportant, pleasant and slant.
The biopsy revealed a malignant tumor.
His repugnant remarks caused an uproar.
The movie had a poignant ending.
The dominant species adapted quickly.
The smell triggered instant disgust.
A significant difference is evident.