Related Clues:

• A quick study
• Well-said
• Spot-on
• Very likely
• Not unlikely
• Relevant, in Latin
• Just right for the occasion
• Not digressing
• *Fitting
• Quick to get things
• Like the mot juste
• Prone (to)
• Sharp, as a pupil
• Relevant (to)
• With relevance, to a lawyer (literally, 'to the thing')