show (your) mettle

See at: prove mettle

• keep someone down
• keep someone guessing
• keep someone in check
• keep someone in mind
• keep someone in the dark
• keep someone in the picture
• keep someone on a short leash
• keep someone on a tight leash
• keep someone on the edge of seat
• keep someone on the edge of their seat
• keep someone on their toes
• keep someone on toes
• keep someone posted
• keep someone sweet
• keep someone up
• keep someone up to date
• keep something at arm's length
• keep something at bay
• keep something dark
• keep something down
• keep something from
• keep something from you
• keep something in check
• keep something in mind
• keep something to