- says, said
- schools and colleges
- seasons
- SEC
- semi/multi
- senior
- sexism
- Show-Me State
- Sinclair School of Nursing
- sophomore
- South Quadrangle
- Southeastern Conference
- spring break
- SSO ID
- State Historical Society of Missouri
- state names
- state of the art, cutting edge
- stepbrother, stepfather, stepmother, stepsister, stepfamily
- Stephens College
- stress reliever
- Student Financial Aid
- student number
- student-athlete
- study abroad
- such as
- System, University of Missouri