heaviness (n.)the property of being comparatively great in weight;
Synonyms: weightiness
heaviness (n.)persisting sadness;
nothing lifted the heaviness of her heart after her loss
heaviness (n.)an oppressive quality that is laborious and solemn and lacks grace or fluency;
his lectures tend to heaviness and repetition
Synonyms: ponderousness
heaviness (n.)used of a line or mark;
heaviness (n.)unwelcome burdensome difficulty;
Synonyms: burdensomeness / onerousness / oppressiveness