pentahedron/pentəʹheedrən, -ʹhedrən/ noun (pl pentahedrons pentahedra /-drə/)

• underdress
• underemployed
• underemployment
• underestimate
• underexpose
• underfeed
• underfelt
• under fire
• under foot
• underfoot
• underfur
• undergarment
• undergird
• underglaze
• undergo
• undergrad
• undergraduate
• underground
• undergrowth
• underhand
• underhanded
• under hatches
• underhung
• underinsured
• underlaid