Vowels /ʊ/ and /uː/ spelled ‘u ’ / ʊ/ When the letter ‘u’ is pronounced as a high-back vowel , it is usually the short /ʊ/: bull, butcher , full, pull, push, sugar, wuss u-e /uː / But when a syllable containing the /u/ sound is followed by the letter ‘e’ in the spelling, the sound will be /uː/: absolute, cute, crude, dude, exude, immune, include, mute, nuke, rude , use, etc . spelled ‘ ew ’ /uː/ brew , chew, jewel, Jewish, lewd, Lewis, newt, shrewd, etc. spelled ‘ oo ’ /uː/ bloom , boom, boost, boot, booth, booze, cool, doom, food, fool, gloom, goof, goose, hoot, loop , loot, loose, mood, moon, moot, noose, ooze, pool, proof, school, shoot, smooth, snoop , soon, spook, spoon, stool, swoon, swoop, tool, tooth, troop, zoom