Meaning : An oppressive quality that is laborious and solemn and lacks grace or fluency.
Example :
A book so serious that it sometimes subsided into ponderousness.
His lectures tend to heaviness and repetition.
Synonyms : heaviness
Meaning : The property of being large in mass.
Synonyms : heft, heftiness, massiveness, ponderosity
Ponderousness meaning in Bengali (Bangla).