ponderous

/ˈpɑndərəs/

When you call Frankenstein's monster ponderous, it's not because he likes to ponder the great questions of life. It's because he moves like a Mack truck, only slower and less gracefully.

Ponderous also describes a person's manner, or their manner of speaking. If it does, this is a person you will want to avoid. They're solemn, speak slowly about things that are boring, and get to the punchline of a joke about seven years after anyone with half a brain has figured it out for themselves.

Definitions of ponderous

1. adjective

   having great mass and weight and unwieldiness
   “a ponderous stone”

   “a ponderous burden”

   “ponderous weapons”

   synonyms:

   heavy

   of comparatively great physical weight or density
2. adjective

   slow and laborious because of weight
   “ponderous prehistoric beasts”

   “a ponderous yawn”

   synonyms: heavy, lumbering

   heavy-footed

   (of movement) lacking ease or lightness
3. adjective

   labored and dull
   “a ponderous speech”

   synonyms:

   uninteresting

   arousing no interest or attention or curiosity or excitement