95dc162e_Glossary_of_Dance_Terms__m_Dance_Dictionary_from_Webref
Soft
Holding or moving the body in a relaxed or non-rigid way. For instance, soft knees are slightly flexed and give a little in movement to absorb any jerks and smooth out the flow. Soft arms are toned, but they give and breathe, allowing each partner room to move. Soft movements are smooth, not jerky, and flow one into the next.
Glossary of Dance Terms
Description Glossary of Terms and Abbreviations from BallroomDancers.com Dance Dictionary from Webref