KEY: Ascertain.
SYN: Prove, verify, find_out, discover, confirm, detect, determine,learn, discern.
ANT: Guess, conjecture, surmise, suppose, presume.

• Companion
• Companionable
• Companionship
• Company
• Comparable
• Comparative
• Compare
• Comparison, [See LIKENESS]
• Compartment
• Compassion
• Compassionate, [See KIND]
• Compass
• Compass \v
• Compatible
• Compeer
• Compel
• Compendious
• Compendium, [See ABRIDGEMENT]
• Compensate
• Compensation
• Compete
• Competence
• Competent, [See ADEQUATE]
• Competition
• Competitor