self-contained (adj.)

• acquisitive
• aloof
• autarchic
• autarkic
• autistic
• autonomous
• bashful
• calm
• close
• collected
• complete
• composed
• controlled
• cool
• detached
• dissociable
• distant
• egotistical
• entire
• even-tempered
• formal
• freewheeling
• grasping
• grave
• greedy
• imperturbable
• incompatible
• independent
• individualistic
• morose
• narcissistic
• neutral
• nonaligned
• nongregarious
• nonpartisan
• peaceful
• placid
• possessive
• remote
• reserved
• reticent
• self-absorbed
• self-centered
• self-governing
• self-indulgent
• self-possessed
• self-reliant
• self-seeking
• self-serving
• self-sufficient
• self-supporting
• selfish
• serene
• serious
• snug
• sober
• solemn
• sovereign
• standoffish
• sullen
• tranquil
• uncommunicative
• uncongenial
• undisturbed
• unemotional
• unflappable
• unfriendly
• unitary
• unperturbed
• unruffled
• unsociable
• unsocial
• whole
• withdrawn