Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun groundbreaking

1 sense of groundbreaking

Sense 1
groundbreaking, groundbreaking ceremony -- (the ceremonial breaking of the ground to formally begin a construction project)
       => ceremony -- (the proper or conventional behavior on some solemn occasion; "an inaugural ceremony")
       => beginning, start, commencement -- (the act of starting something; "he was responsible for the beginning of negotiations")

Antonyms of adj groundbreaking

1 sense of groundbreaking

Sense 1
innovative, innovational, groundbreaking -- (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")

INDIRECT (VIA original) -> unoriginal -- (not original; not being or productive of something fresh and unusual; "the manuscript contained unoriginal emendations"; "his life had been unoriginal, conforming completely to the given pattern"- Gwethalyn Graham)

Similarity of adj groundbreaking

1 sense of groundbreaking

Sense 1
innovative, innovational, groundbreaking -- (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")
       => original (vs. unoriginal) -- (being or productive of something fresh and unusual; or being as first made or thought of; "a truly original approach"; "with original music"; "an original mind")