1. On or of upper floors of a building
   - upstairs

Encyclopedia: Upstair

• whenever
• where
• where's
• where've
• whereabouts
• whereafter
• whereas
• whereat
• whereby
• wherefore
• wherefrom
• wherein
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• whereon
• wheresoever
• whereto
• whereunto
• whereupon
• wherever
• wherewith
• wherewithal
• wherry
• whet
• whether
• whetstone