addle
Concise Oxford English Dictionary © 2008 Oxford University Press:
addle/ˈadl/
▶verb (often as adj. addled)
- 1 confuse.
- 2 (of an egg) become rotten, producing no chick.
- 1 not clear or cogent; muddled: the film is addle-brained.
- 2 archaic (of an egg) rotten.
– origin ME: from OE adela ‘liquid filth’, of Gmc origin.
'addle' also found in these Oxford entries:

