To hum or buzz.
To sputter or hiss.
To fail to generate the expected yield when exploded during testing.
To decay or die off to nothing; to burn out; to end less successfully than previously hoped.
Failure of an exploding nuclear bomb to meet its expected yield during testing.
An abortive effort; a flop or dud.
A state of agitation or worry.
A spluttering or hissing sound.