Synonyms of self-possession

self-possession

noun

ˌself-pə-ˈze-shən 

1

as in composure

evenness of emotions or temper

that neurosurgeon's self-possession in the operating room is legendary

Synonyms & Similar Words

• composure
• calmness
• equanimity
• collectedness
• sangfroid
• imperturbability
• coolness
• serenity
• equilibrium
• aplomb
• countenance
• placidity
• confidence
• tranquility
• self-assurance
• repose
• assurance
• poise
• self-confidence
• tranquilness
• composedness
• cool
• self-composedness
• self-assuredness
• self-trust
• impassivity
• indifference
• unconcern
• detachment
• numbness
• insensibility
• phlegm
• apathy
• easygoingness
• laid-backness

Antonyms & Near Antonyms

• agitation
• perturbation
• anxiety
• concern
• apprehension
• care
• uneasiness
• discomposure
• solicitude
• alarm
• disquiet
• worry
• nervousness
• excitability
• apprehensiveness
• anxiousness
• disturbance
• excitableness

2

as in restraint

the power to control one's actions, impulses, or emotions

the little girl's self-possession very occasionally gave way to crying fits

Synonyms & Similar Words

• restraint
• composure
• temperance
• nerve
• determination
• self-control
• willpower
• self-command
• self-discipline
• self-mastery
• will
• confidence
• self-containment
• self-government
• self-restraint
• temperateness
• continence
• discipline
• assurance
• moderation
• abnegation
• mastery
• self-abnegation
• equanimity
• poise
• soberness
• self-confidence
• forbearance
• sobriety
• self-denial
• control
• coolness
• moderateness
• avoidance
• aplomb
• abstention
• abstinence
• eschewal
• command
• discretion

Antonyms & Near Antonyms

• gratification
• indulgence
• intemperance
• feebleness
• excessiveness
• weakness
• overindulgence
• failing
• self-indulgence
• vice
• frailty
• fault
• shortcoming
• demerit
• foible
• unrestraint
• intemperateness
• indiscipline
• immoderacy
• unreserve
• unconstraint
• unreservedness

Synonym Chooser

How is the word self-possession distinct from other similar nouns?

Some common synonyms of self-possession are aplomb, assurance, and confidence. While all these words mean "a state of mind or a manner marked by easy coolness and freedom from uncertainty, diffidence, or embarrassment," self-possession implies an ease or coolness under stress that reflects perfect self-control and command of one's powers.

answered the insolent question with complete self-possession

When might aplomb be a better fit than self-possession?

In some situations, the words aplomb and self-possession are roughly equivalent. However, aplomb implies a manifest self-possession in trying or challenging situations.

handled the reporters with great aplomb

When could assurance be used to replace self-possession?

The meanings of assurance and self-possession largely overlap; however, assurance carries a stronger implication of certainty and may suggest arrogance or lack of objectivity in assessing one's own powers.

handled the cross-examination with complete assurance

When can confidence be used instead of self-possession?

Although the words confidence and self-possession have much in common, confidence stresses faith in oneself and one's powers without any suggestion of conceit or arrogance.

the confidence that comes from long experience

Example Sentences

Recent Examples of self-possession

That same self-possession defined her public persona and continues today. — Michelle Duncan, Architectural Digest, 8 May 2026

Shawn joins us a moment later, and he is reserved, not hostile but preternaturally wary, measuring out his words with pauses and deference cut with self-possession. — Christopher Bonanos, Vulture, 23 Feb. 2026

On Tuesday, Sasha De Sola, an old pro in the role, danced it with ravishing self-possession, hardly seeming to need the support of her consort Harrison James, who exuded the corn-fed charm of a linebacker while delivering cleanly polished grande pirouettes. — Rachel Howard, San Francisco Chronicle, 11 Feb. 2026

Claude has gained a devoted following for its strange sense of mild self-possession. — Gideon Lewis-Kraus, New Yorker, 9 Feb. 2026