stem: vivid lurid
choice: effectual able
choice: expensive exorbitant
choice: ghastly gruesome
choice: conspicuous sullied
choice: bold tremulous
prefix: ML: http://www.appliedpractice.com/pdfs/Anal.%20and%20Sent.%20Comp.%20for%20S.%20L.pdf (9) (spell corrected _conspiculous_)