1. One, single
   - mono-, mon-

Encyclopedia: Uni-

• rock sunfish
• rock the boat
• rock wallaby
• rock wool
• rock wren
• rock-and-roll
• rock-bottom
• rock-inhabiting
• rock-loving
• rock-ribbed
• rock-steady
• rockabilly
• rockbound
• rockchuck
• rockcress
• Rockefeller
• rocker
• rocker arm
• rockers
• rockery
• rocket
• rocket base
• rocket cress
• rocket engine
• rocket engineer