self-possessed
adjective
self-pos·sessed ˌself-pə-ˈzest 
also -ˈsest
: having or showing self-possession : composed in mind or manner : calm
self-possessedly
ˌself-pə-ˈze-səd-lē
adverb -ˈse-;
-ˈzest-lē
-ˈsest-
Synonyms
- calm
- collected
- composed
- cool
- coolheaded
- equal
- level
- limpid
- peaceful
- placid
- possessed
- recollected
- sedate
- self-composed
- serene
- smooth
- together
- tranquil
- undisturbed
- unperturbed
- unruffled
- unshaken
- untroubled
- unworried
See all Synonyms & Antonyms 
Word History
First Known Use
1766, in the meaning defined above
Kids Definition
self-possessed
adjective
self-pos·sessed
ˌself-pə-ˈzest
: having or showing control of emotions or reactions
self-possessed
adjective
as in calm
free from emotional or mental agitation a supremely self-possessed teacher who could handle any crisis Synonyms & Similar Words
Relevance
- calm
- serene
- peaceful
- composed
- collected
- tranquil
- possessed
- placid
- unruffled
- confident
- unperturbed
- unworried
- smooth
- coolheaded
- undisturbed
- untroubled
- unshaken
- limpid
- sedate
- recollected
- at peace
- relieved
- cool
- steady
- together
- relaxed
- self-composed
- level
- centered
- imperturbable
- nonchalant
- mellow
- unflappable
- equal
- detached
- equable
- unshakable
- easygoing
- tranquilized
- affable
- aloof
- nerveless
- carefree
- unconcerned
- well-adjusted
- even-keeled
- disciplined
- self-assured
- tranquillized
- sober
- dispassionate
- self-controlled
- assured
- impassive
- even
- well-balanced
- phlegmatic
- stolid
- breezy
- laid-back
- indifferent
- happy-go-lucky
- bovine
- self-contained
- devil-may-care
- loosey-goosey
Antonyms & Near Antonyms
- agitated
- disturbed
- flustered
- perturbed
- anxious
- upset
- unstrung
- discomposed
- unglued
- nervous
- unhinged
- uneasy
- restless
- unsettled
- distressed
- bothered
- worried
- unquiet
- jumpy
- tense
- uptight
- skittish
- jittery
- unstable
- high-strung