The Collaborative International Dictionary of English v.0.48:

Funereal \Fu*ne"re*al\, a. [L. funereus, fr. fentus a funeral.]
   Suiting a funeral; pertaining to burial; solemn; as, at a
   funereal pace. Hence: Dark; dismal; mournful. --Jer. Taylor.
   [1913 Webster]

         What seem to us but sad funereal tapers May be heaven's
         distant lamps.                           --Longfellow.
   -- Fu*ne"re*al*ly, adv.
   [1913 Webster]