Resultados posibles:
desamarraba
-I was undoing
Imperfecto para el sujeto yo del verbo desamarrar.
Imperfecto para el sujeto él/ella/usted del verbo desamarrar.

desamarrar

Desamarraba los cordones para sacarse una piedra del zapato.
He was untying his shoelaces to get a stone out of his shoe.
Palabra del día
la escarcha