anion /anˈī-ən/

1. An ion that seeks the anode
2. An electronegative ion

• keep one's options open
• keep one's powder dry
• keep one's shirt on
• keep one's thumb on
• keep one's weather eye open
• keep one's wits about one
• keep one's wool on
• keep one's word
• keep open house
• keep out
• keep pace with
• keep posted
• keep quiet about
• keeps
• keepsake
• man-slayers
• mansonries
• mansonry
• man-stealer
• man-stealers
• mansuete
• mansuetude
• mansuetudes
• mansworn
• manta