POSTPOSITIONS
Scrabble letter values: P3O1S1T1P3O1S1I1T1I1O1N1S1 = 17
Definition
POSTPOSITIONS is the plural of POSTPOSITION.
noun POSTPOSITION: (linguistics) the placing of one linguistic element after another (as placing a modifier after the word that it modifies in a sentence or placing an affix after the base to which it is attached).