Related Clues:

• Management tier
• Happy to see someone, perhaps
• Not stooped
• Standing straight
• Palindromically smooth
• Build upright
• Construct, build
• Device ot establish a flat surface
• Straight, even
• Upright - build it
• Upright or vertical
• Build, set up
• Build, put up
• Horizontal plane - a palindrome
• Flat and smooth