WordNet 3.0
Noun (2)
- the relative importance granted to something“his opinion carries great weight”“the progression implied an increasing weightiness of the items listed”Synonyms: weight
- the property of being comparatively great in weight“the heaviness of lead”Synonyms: heaviness
Webster's Dictionary (GCIDE)
Weightiness \Weight"i*ness\, n. The quality or state of being weighty; weight; force; importance; impressiveness. [1913 Webster]