floppy
adj. B1 Intermediate US //ˈfɫɑpi// UK //flˈɒpi// flop·py Archaic Informal Slang
adj. soft and loose instead of firm or stiff. You use this to describe things that hang down or bend easily, like a dog's ears.
adj. lacking rigidity or firmness; tending to hang or move loosely.
The puppy has big floppy ears.
He wore a floppy sun hat that kept falling over his eyes while he worked in the garden.
The character's signature look consisted of an oversized, floppy velvet beret that seemed to defy gravity as he moved across the stage.
From flop + -y.
Usage
Typically used as an attributive adjective before a noun.