You have given 8 letters but ARABIAN may fit.
jovial
sultana
snowday
There are no 7-letter words with those letters, there are a few 6-letter words though:grieveregivereviewviewerweever
elitist
jetsam
Parades
There are three 7-letter words possible:roosterrooterstoreros
cribbed
Except you gave us 11 letters that spell "celebrating."
Those letters can be used to spell "exigent".
The word you are looking for is "squeak."