swaybackedsway‧backed /ˈsweɪbækt/ adjective 
American English curved downwards or inwards in the middle
American English curved downwards or inwards in the middle- unitary
- Unite
- unite
- United
- united
- United Arab Emirates
- United Artists
- United Farm Workers
- United Kingdom
- United Nations
- United Nations High Commission for Refugees
- United Negro College Fund
- United Reformed Church
- United States Citizenship and Immigration Services
- United States of America
- United Way
- unit price
- unit trust
- unity
- Univ.
- Universal
- universal
- Universal Declaration of Human Rights
- universality
- universal joint