Possible Clues:

• Propped (up)
• Buttressed (with ''up'')
• Fortified, with "up"
• Fortified, with 'up'
• Supported United player, perhaps, after attempt to score has fallen short
• Propped up
• Bolstered (up)
• Reinforced, as a coastline (with "up")
• Bolstered, with 'up'
• Held (up)