Possible Clues:

• 'Quoth the Raven, - - ' (Poe)
• Opposite of eternally
• To quote this you'd sound as if you were ravin'
• At no future time
• Raven's remark
• This could be less of what you say if you sound as if you're ravin'
• Poe: ` `Quoth the Raven, .........
• You'd need to sound as if you were ravin' to say that
• Postponement sine die threatened by large corvid
• Sounds as if one might be less ravin' to say a thing like that