self-contained
adjective
self-con·tained ˌself-kən-ˈtānd 
1
a
: complete in itself : independent
a self-contained machine
a self-contained program of study
b
: built-in
a lectern with a self-contained light fixture
2
a
: showing self-control
b
: formal and reserved in manner
self-containedly
ˌself-kən-ˈtā-nəd-lē
adverb -ˈtānd-lē
self-containedness
ˌself-kən-ˈtā-nəd-nəs
noun -ˈtān(d)-nəs
self-containment
ˌself-kən-ˈtān-mənt
noun 
Word History
First Known Use
1605, in the meaning defined at sense 1a
self-contained
adjective
1
as in independent
Synonyms & Similar Words
Relevance
- independent
- detached
- discrete
- separate
- freestanding
- single
- private
- unconnected
- unattached
- individual
- disconnected
- free
Antonyms & Near Antonyms
- attached
- connected
- joined
- linked
- adjoining
2
as in introverted
Synonyms & Similar Words
- introverted
- restrained
- staid
- sedate
- aloof
- inhibited
- indrawn
- reserved
- self-effacing
- diffident
- sober
- retiring
- laconic
- taciturn
- bashful
- silent
- demure
- sheepish
- backward
- modest
- coy
- closemouthed
- uncommunicative
- dumb
- reticent
- tight-lipped
Antonyms & Near Antonyms
- communicative
- conversational
- unreserved
- chatty
- talkative
- talky
- garrulous
- vocal
- loquacious
- outspoken
- mouthy
- motormouthed
- gossipy
- diffuse
- verbose
- gabby
- prolix
- wordy
- rambling
- free-spoken
- blabby
- sociable
- extroverted
- extraverted
- outgoing
- gregarious
- windy
- talebearing
- long-winded
3
as in disciplined
Synonyms & Similar Words
- disciplined
- imperturbable
- self-composed
- unflappable
- self-sufficient
- unshakable
- self-controlled
- self-collected
- nerveless
- self-reliant
- composed
- self-poised
- unself-conscious
- smug
- vainglorious
- conceited
- collected
- complacent
- tranquil
- egotistic
- unperturbed
- upbeat
- self-contented
- egoistic
- pompous
- optimistic
- stuck-up
- serene
- self-pleased
- important
- vain
- self-promoting
- rosy
- sanguine
- prideful
- self-satisfied
- recollected
- self-affected
- self-centered
- proud
- coolheaded
- hopeful
- egotistical
- self-possessed
- overweening
- secure
- self-important
- unshaken
- poised
- confident
- self-conceited
- egoistical
- self-complacent
- assured
- self-applauding
- cool
- self-assured
- self-confident
- self-asserting
Antonyms & Near Antonyms
- insecure
- humble
- diffident
- meek
- timid
- unassuming
- modest
- unassertive
- quiet
- unpretentious
- nervous
- reserved
- self-distrustful
- jumpy
- self-doubting
- bashful
- jittery
- shy
- demure
- mousey
- mousy
- overmodest
- self-reproving
- self-reproachful
- self-critical