1. Tall rough-leaved perennial with a few large flower heads; central United States
   - showy sunflower

Type of: helianthus, sunflower

• untested
• untethered
• unthankful
• unthaw
• unthawed
• untheatrical
• unthematic
• unthinkable
• unthinkably
• unthinking
• unthinkingly
• unthought
• unthought-of
• unthoughtful
• unthoughtfulness
• unthread
• unthreatening
• untidily
• untidiness
• untidy
• untie
• untied
• untier
• until
• until now