groundbreaking
1. [ adjective ] being or producing something like nothing done or experienced or created before
Synonyms: innovative innovational
Examples:

"stylistically innovative works" "innovative members of the artistic community" "a mind so innovational, so original"

Related terms: original
2. [ noun ] the ceremonial breaking of the ground to formally begin a construction project
Synonyms: groundbreaking_ceremony
Related terms: ceremony beginning
Similar spelling:   groundbreaker
  ground_plan
  ground_fire
  ground_bait
  ground_cedar
  grand_rapids
  ground_tackle
  ground_stroke
  ground_forces