ADDLE

■ verb [often as adjective ~d ]

1》 confuse.

2》 (of an egg) become rotten, producing no chick.

■ adjective

1》 not clear or cogent; muddled: the film is ~-brained.

2》 archaic (of an egg) rotten.

Origin

ME: from OE adela 'liquid filth', of Gmc origin.