Related Clues:

• Leave yawning
• Snoozefest
• Like most runs, in baseball
• Given an X or R
• Produced, as fruit
• Put on a scale of 1 to 10, perhaps
• '___ M for Mature'
• Gun measurement
• Gave two stars, say
• Wearisome speaker
• Uninteresting one
• He's ennui-inducing
• Given a PG, perhaps
• Inspire ennui
• Acquired through work