Synonyms for groundbreaking

Noun

1. groundbreaking, groundbreaking ceremony, ceremony, beginning, start, commencement

usage: the ceremonial breaking of the ground to formally begin a construction project

Adjective

1. innovative, innovational, groundbreaking, original (vs. unoriginal)

usage: being or producing something like nothing done or experienced or created before; "stylistically innovative works"; "innovative members of the artistic community"; "a mind so innovational, so original"