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

2 senses of massiveness

Sense 1
bulkiness, massiveness -- (an unwieldy largeness)
       => largeness, bigness -- (the property of having a relatively great size)

Sense 2
heft, heftiness, massiveness, ponderousness, ponderosity -- (the property of being large in mass)
       => heaviness, weightiness -- (the property of being comparatively great in weight; "the heaviness of lead")