Related Clues:

• Lying face downward
• More than likely
• Apropos
• Belly down
• Pertinent
• Quick on the uptake
• Most likely to succeed
• Quite bright
• Flat on one's face
• Facedown
• Trustworthy
• Bldg. unit
• Mentally bright
• Perfectly suited
• It may be a walk-up: Abbr.