Which of the following is the correct synonym for the given word?
Soporific

Sleep inducing

The correct synonym for the word "soporific" is sleep-inducing.

• Soothing means calming or relaxing.
• Terrific means extremely good or impressive.
• Supreme means highest in rank, importance, or quality.

Soporific means causing sleepiness or drowsiness. It is often used to describe a drug or other substance that has a sleep-inducing effect. So the answer is sleep-inducing.