A cheering word (6)
I believe the answer is:
hooray
'a cheering word' is the definition.
The definition suggests a singular noun which matches the answer.
This is the entire clue.
Can you help me to learn more?
(Other definitions for hooray that I've seen before include "Hurrah" , "Shout of joy (for Henry?)" , "Cheer" , "Shout of approval" , "Yippee!" .)