Quartas
Poses: Dance lines struck and held as dramatic flourishes at the end of a song. Large dramatic ones are used for stage or fantasia dancing, smaller softer versions occasionally in Salon style, and not used in Milonguero style at all. See Corte.
Quebrada
Break; broken: A position where the lady stands on one foot with the other foot hanging relaxed behind the supporting foot. Sometimes seen with the lady hanging with most of her weight against the man. Also a position in which the dancer’s upper body and hips are rotated in opposition to each other with the working leg flexed inward creating a broken dance line.
Querido/da
Beloved, dearest (from 'querer')