SUBTOTALLING is a playable word

subtotal Scrabble® Dictionary

verb
subtotaled, subtotaling, subtotals or subtotalled, subtotalling, subtotals
to total a portion of
969 Playable Words can be made from "SUBTOTALLING"
   2-Letter Words (32 found)
   3-Letter Words (126 found)
   10-Letter Words (1 found)
   11-Letter Words (1 found)
   12-Letter Words (1 found)