estaban marchitando
Imperfect progressive ellos/ellas/ustedes conjugation of marchitar.

marchitar

Y las relaciones humanas se estaban marchitando.
And human relationships were already withering.
El otro día un sahaja yogui que vino a mi casa vio unas flores que se estaban marchitando.
The other day there was a sahaja yogi who came to My house and he saw some flowers which were fading away.
Word of the Day
to light