The Collaborative International Dictionary of English v.0.48:

Sizzle \Siz"zle\, v. i. [imp. & p. p. Sizzled; p. pr. & vb. n.
   Sizzling.] [See Siss.]
   To make a hissing sound; to fry, or to dry and shrivel up,
   with a hissing sound. [Prov. Eng. & Colloq. U. S.] --Forby.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sizzling \Siz"zling\,
   a. & n. from Sizzle.
   [1913 Webster]

WordNet (r) 3.0 (2006):

sizzling
    adj 1: hot enough to burn with or as if with a hissing sound; "a
           sizzling steak"; "a sizzling spell of weather"
    2: characterized by intense emotion or interest or excitement;
       "a red-hot speech"; "sizzling political issues" [syn: red-
       hot, sizzling]

Moby Thesaurus II by Grady Ward, 1.0:

84 Moby Thesaurus words for "sizzling":
   assibilation, baking, boiling, broiling, burning, buzz, clack,
   click, crack, cracking, crackle, crackling, crepitation,
   decrepitation, effervescence, effervescent, effervescing, fiery,
   fizz, fizzle, fizzling, frication, frictional rustling, het up,
   hiss, hissing, hot, hush, hushing, lisp, red-hot, rhonchus,
   scalding, scorching, seething, shush, shushing, sibilance,
   sibilant, sibilation, siffle, sigmatism, simmering, siss, sissing,
   sizz, sizzle, smoldering, snap, snapping, sneeze, sneezing, sniff,
   sniffing, sniffle, sniffling, snore, snoring, snort, snuff,
   snuffle, snuffling, spit, spitting, splutter, sputter, squash,
   squelch, squish, sternutation, stertor, swish, torrid, wheeze,
   wheezing, wheezy, whish, whistle, whistling, white noise,
   white-hot, whiz, whoosh, zip