heebie-jeebies
Concise Oxford English Dictionary © 2008 Oxford University Press:
heebie-jeebies/hiːbiˈʤiːbiz/
▶plural noun (the heebie-jeebies) informal a state of nervous fear or anxiety.
– origin 1920s (orig. US): of unknown origin.
'heebie-jeebies' also found in these Oxford entries:

