Is “Sidle” a Scrabble word?
Yes
SIDLE
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 Sidle
/ˈsaɪdl/
noun
1.An act of sidling.
verb
1.To (cause something to) move sideways.
2.In the intransitive sense often followed by up: to (cause something to) advance in a coy, furtive, or unobtrusive manner.