stolid (adj.)
- aloof
- apathetic
- arid
- barren
- blunt
- bored
- bovine
- calm
- careless
- cloistered
- cool
- dense
- detached
- disinterested
- dispassionate
- distant
- doltish
- dry
- dull
- dumb
- dwindling
- earthbound
- even-tempered
- fact
- halcyon
- heedless
- hushed
- impassive
- imperturbable
- inactive
- incurious
- indifferent
- inert
- infertile
- insouciant
- isolated
- lethargic
- listless
- literal
- lumpish
- mindless
- moldering
- mundane
- obtuse
- pacific
- passive
- patient
- peaceable
- peaceful
- phlegmatic
- placid
- prosaic
- prosy
- quiescent
- quiet
- regardless
- reposeful
- restful
- resting
- secluded
- sequestered
- sheltered
- slow
- smooth
- staid
- steady
- still
- stilly
- stoic
- stuffy
- stupid
- supine
- thick
- tranquil
- unagitated
- unconcerned
- undisturbed
- unemotional
- unflappable
- unimaginative
- uninquiring
- uninspired
- uninterested
- uninventive
- uninvolved
- unmindful
- unmoved
- unoriginal
- unperturbed
- unromantic
- unruffled
- untroubled
- waning
- withdrawn
- wooden
