Is “Bumping” a Scrabble word?
Yes
BUMPING
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 Bumping
/ˈbʌmpɪŋ/
verb
1.To knock against or run into with a jolt.
2.To move up or down by a step; displace.
“I bumped the font size up to make my document easier to read.”
3.To post in an Internet forum thread in order to raise the thread's profile by returning it to the top of the list of active threads.
noun
1.The sound or action of a bump.