show (your) mettle

See at: prove mettle

• puppy love
• pure and simple
• a down and out
• a drawing card
• a dream come true
• a dream ticket
• a drop in the bucket
• a drop in the ocean
• a dry run
• a Dutch treat
• a face as long as a wet week
• a fact of life
• a factory farm
• a fag hag
• a fair shake
• a fair-weather friend
• a fairy godmother
• a fait accompli
• a fallen angel
• a fallen idol
• a fallen woman
• a fall from grace
• a fall guy
• a false alarm
• a false dawn