Soso, sosa, sosilón

Soso, sosa, sosilón
 

we call sb soso, or sosilón when they are not very animated, they don´t like doing anything. they stay all they at home etc...
Another meaning is sb who speaks very slowly.
How do we translate these two meanings in English?

For the first one, "dull"? :thinking:

Could I use soso in a wider sense of, for example mediocre, más o menos, apenas aceptable etc.? If so, then finally a word I can say without being accused of speaking spanglish: an exact equivalent of "so-so."

lifeless
lackluster
dull
boring

sluggish
lethargic
slow
inactive
spiritless
lazy

be a couch-potato

lead a *ho-hum existence
*humdrum
*tiresome
*insipid
*vapid