Related Clues:

• Sound or defensible
• Seemingly rational little gap in record
• A number competent? That’s credible
• Volume added to a top sound
• Acceptable video about a learner
• Number clever enough for game show
• Acceptable shape of neck with a top
• Credible number left in Lincoln?
• All but one in side fit and sound?
• Like a solid theory
• Legitimate, legally acceptable
• Sound; justifiable
• Number with clever sound
• Still legally binding
• Like a legally binding contract