I'm after a very specific word, so for the purpose of illustrating the desired meaning, let's imagine nigh-tornado-like winds are whizzing around outside and that I have unusually wide, outstretched ears; lots of surface there. As I trudge to the store, cursing under my breath, I notice folding in my satellite dish ears slightly loosens the winds' grip on me. I start to wonder if there's a word to describe this unfortunate quality of my ears.
Armed with a thesaurus, I went on an adventure to find the right word. Sadly, the only thing it turned up was the adjective inefficient, which does not quite capture the "object or a part of an object which catches/blocks air when the object is in movement (thereby slowing it down)" sense or its hypothetical adjective.
So my question is: Is there a word that would describe the quality of an object to block air, thus slowing it down, i.e. the opposite of aerodynamically efficient? I'm not finicky about it, so both adjectives and nouns are fine.
You can (and are encouraged) to make up words on the spot. A fascinating example I nicked off a reddit thread is aerostagnant.
Since one of the tags requires an example:
My ears are as __ as a parachute.