ponderous

Meanings

• slow and laborious because of weight
  • "ponderous prehistoric beasts"
  • "a ponderous yawn"
• having great mass and weight and unwieldiness
  • "a ponderous stone"
  • "a ponderous burden"
  • "ponderous weapons"
• labored and dull
  • "a ponderous speech"

Synonyms

heavy, lumbering