Is “Rapid” a Scrabble word?
Yes
RAPID
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 Rapid
/ˈɹæpɪd/
noun
1.(often in the plural) a rough section of a river or stream which is difficult to navigate due to the swift and turbulent motion of the water.
2.A burst of rapid fire.
adjective
1.Very swift or quick.
“a rapid stream”
2.Steep, changing altitude quickly. (of a slope)
3.Needing only a brief exposure time. (of a lens, plate, film, etc.)
adverb
1.(archaic or colloquial) Rapidly.