usage: the property of being comparatively great in weight; "the heaviness of lead"
2. heaviness, sadness, unhappiness
usage: persisting sadness; "nothing lifted the heaviness of her heart after her loss"
3. ponderousness, heaviness, uninterestingness
usage: an oppressive quality that is laborious and solemn and lacks grace or fluency; "a book so serious that it sometimes subsided into ponderousness"; "his lectures tend to heaviness and repetition"