hubieran desperdiciado
-they/you had wasted
Past perfect subjunctive ellos/ellas/ustedes conjugation of desperdiciar.

desperdiciar

La hubieran desperdiciado de no ser por mí.
They would've wasted it if it wasn't for me.
Sin su cooperación y paciencia, todos los esfuerzos de los voluntarios se hubieran desperdiciado.
Without their cooperation and patience, all of the volunteer efforts could easily have been squandered.
Word of the Day
to pour