Is “Sonic” a Scrabble word?
Yes
SONIC
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 Sonic
/ˈsɒnɪk/
adjective
1.Of or relating to sound.
2.Having a speed approaching that of the speed of sound in air.