OUCH!
The word ouch is not a noun; ouch is an interjection, a exclamation of sharp sudden pain.
Crash is a 5-letter word that can refer to "a sudden noise".
A three letter synonym for the exclamation 'gosh' is gee.
The vowel sound in drought is the 'ow' dipthong sound, as in the word "out" or "loud."
cramps
fervent
onrush
Sudden
Unexpected
craving
Skoal
jerk, jolt