The best replacement for dynamite is tnt.

The best alternatives to dynamite are rated as following:
★★★★★  tnt
★★★  bill gates
★★★  c4
★★  barbra streisand
★★  grenade
★  dynamite
★  california gurls
★  mermite
★  black powder
★  tannerite
★  napoleon
★  red rocket crape myrtle
★  bonaparte
  what makes you beautiful
  gates
  napoleon bonaparte
  tnt more powerful
  brock samson
  anfo
  red rocket crape myrtles
  mermite ni no kuni
  samuel l jackson
  red rocket crepe myrtle
  nitroglycerin
  m80

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Speaking about dynamite, one probably shouldn't forget about bill gates.

Other search terms related to dynamite and their ratings are:
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dynamite
tnt
bill gates