Mohorovičić discontinuity/mohhəʹrohvichich/ noun

• unwieldy
• unwilling
• unwind
• unwise
• unwitting
• unwonted
• unworkable
• unworldly
• unworn
• unworthy
• unwound
• unwrap
• unwritten
• unyielding
• unyoke
• unzip
• up
• up-
• up against
• up against it
• up a gum tree
• up-anchor
• up-and-coming
• up and down
• up-and-down