Is “Working” a Scrabble word?
Yes
WORKING
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 Working
/ˈwɜːkɪŋ/
noun
1.(usually in the plural) Operation; action.
2.Method of operation.
3.The incidental or subsidiary calculations performed in solving an overall problem.
“Be sure to check your working.”