SLOGGING
Scrabble letter values: S1L1O1G2G2I1N1G2 = 11
Definition
SLOGGING is the present participle of SLOG.
verb SLOG: work doggedly or persistently.
Synonyms of SLOG: plug_away, peg_away, keep_one's_nose_to_the_grindstone, keep_one's_shoulder_to_the_wheel