SPACIOUSNESSES
Scrabble letter values: S1P3A1C3I1O1U1S1N1E1S1S1E1S1 = 18
Definition
SPACIOUSNESSES is the plural of SPACIOUSNESS.
noun SPACIOUSNESS: spatial largeness and extensiveness (especially inside a building).
Synonyms of SPACIOUSNESS: capaciousness, roominess, commodiousness