insubstantialin‧sub‧stan‧tial /ˌɪnsəbˈstænʃəl◂/ adjective 
1formal not solid, large, strong, or definite: 
The evidence seemed very insubstantial. an insubstantial meal the insubstantial outline of a ship2literary not existing as a real object or person: insubstantial ghosts
1formal not solid, large, strong, or definite: The evidence seemed very insubstantial. an insubstantial meal the insubstantial outline of a ship2literary not existing as a real object or person: insubstantial ghosts- work-surface
- work-to-rule
- workweek
- world
- World Almanac
- World Bank
- world-beater
- world-beating
- world-class
- WorldCom
- World Council of Churches
- World Cup
- World English
- world-famous
- World Health Organization
- worldliness
- worldly
- worldly-wise
- world music
- world power
- world record
- world-record
- World Series
- World Service
- World Trade Center