Is “Subbing” a Scrabble word?
Yes
SUBBING
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Subbing
verb
1.To substitute for.
2.To work as a substitute teacher, especially in primary and secondary education.
3.To replace (a player) with a substitute.
“He never really made a contribution to the match, so it was no surprise when he was subbed at half time.”
verb
1.To coat with a layer of adhering material; to planarize by means of such a coating.
2.To prepare (a slide) with a layer of transparent substance to support and/or fix the sample.
noun
1.A copy editing process.