It's long because it doesn't say the u sound in umbrella. It says the long sound in use.
The word "Dude" does not have a short "U" sound, it has a long "U" sound similar to "oo".
Sean Foreman Is The Short Haired Blonde Guy And The Black Long Haired One Is Nat Motte (Nathenial)
Oh, dude, Haruhi from "The Melancholy of Haruhi Suzumiya"? She's got long hair in the anime. Like, it's pretty iconic, you know? So, yeah, long hair for sure.
a short dude with short brown hair and green eyes and is a Italian
Short round and the Egyptian dude.
Oh, dude, it's like, totally a short "a" sound. You know, like when you're at camp and you're like, "Hey, pass me the marshmallows," not "Hey, paaasss me the marshmallows." So yeah, short "a" all the way.
yea dude
Humanity has a short vowel sound. The "u" in "humanity" is pronounced as a short vowel, as in "huh-man-ity." In linguistics, short vowels are typically pronounced more quickly and with a lower pitch compared to long vowels, which are pronounced with a longer duration and higher pitch.
long
Loser long or short vowel
Dude: Whoa Swell Gnarly tube Spitting wave Face crest long board short board fish board
The I has a short I sound, as in click or trick.