Female submission or femsub is an activity or relationship in which a woman submits to the direction of a sexual partner or has her body used sexually by or for the sexual pleasure of her partner. The expression is often associated with BDSM, where submission to such activity is usually voluntarily and consensual. Submission usually involves a degree of trust by the woman in her partner. The dominant partner is usually a man, but can also be another woman, or there can be multiple dominant partners simultaneously. The submissive woman may derive sexual pleasure or emotional gratification from relinquishing control to a trusted dominant partner.