negative, sudden uprising = cioux, pronounced coo
opposing present administration or party.
A Revolting
uprising, revolution, mutinity, rebel
almost
mutinity, putch, rebellion, uprising
No they're antonyms
A palindrome that is a synonym of "sudden noise" is "pop," as it reads the same forwards and backwards.
Unexpected
Immediate Sudden
abruptly, all of a sudden, unexpectedly,
Well, since extemporaneous means sudden... you would need an antonym for sudden. That would be anticipated or expected.
A revolt.
sudden, unexpected, rapid, surprising, quick, rash, curt, brief, short