DIAGRAMMED is a playable word

diagram Scrabble® Dictionary

verb
diagramed, diagraming, diagrams or diagrammed, diagramming, diagrams
to illustrate by a diagram (a graphic design)
246 Playable Words can be made from "DIAGRAMMED"
   2-Letter Words (19 found)
   9-Letter Words (1 found)
   10-Letter Words (1 found)