conflagrate
     v 1: cause to start burning; "the setting sun kindled the sky
          with oranges and reds" syn: kindle, enkindle, inflame
     2: start to burn or burst into flames; "marsh gases ignited
        suddenly"; "the oily rags combusted spontaneously" syn: erupt,
         ignite, catch fire, take fire, combust
see also:
kindle enkindle inflame erupt ignite catch fire 
take fire combust 

23 moby thesaurus words for "conflagrate":
   bank, burn, enkindle, fan the flame, feed, feed the fire, fire,
   ignite, inflame, kindle, light, light up, rekindle, relight,
   relume, set fire to, set on fire, stir the fire, stoke,
   stoke the fire, strike a light, torch, touch off