descalzas

In a sentence

• Las niñas están jugando descalzas en el jardín.

  The girls are playing barefoot in the garden.

  Here, 'descalzas' is an adjective modifying 'las niñas', indicating that they are barefoot while playing. 'Descalzas' agrees in gender (feminine) and number (plural) with 'las niñas'.

• Siempre caminamos descalzas por la playa al atardecer.

  We always walk barefoot along the beach at sunset.

  In this context, 'descalzas' describes the condition of the people walking, emphasizing being without shoes. Again, it matches the subject in gender and number.

• Se quedaron descalzas tras quitarse los zapatos.

  They were left barefoot after taking off their shoes.

  Here, 'descalzas' relates to the state of the individuals after performing the action of taking off their shoes, showing a resultant state. It adapts to the gender and number of those referred to.