Synonyms of the word

unconcerned

• adj. Indifferent and having no interest; aloof.
• adj. Not worried, anxious or apprehensive.

blase

• adj. Alternative spelling of blasé.

blithe

• adj. (dated or literary) Happy, cheerful.
• adj. Indifferent, careless, showing a lack of concern.

careless

• adj. (archaic) Free from care; unworried, without anxiety.
• adj. Not concerned or worried (about).
• adj. Not giving sufficient attention or thought, especially concerning the avoidance of harm or mistakes.

casual

• adj. Happening by chance.
• adj. Coming without regularity; occasional or incidental.
• adj. Employed irregularly.
• adj. Careless.
• adj. Happening or coming to pass without design.
• adj. Informal, relaxed.
• adj. Designed for informal or everyday use.
• n. (Britain, Australia, New Zealand) A worker who is only working for a company occasionally, not as its…
• n. A soldier temporarily at a place of duty, usually en route to another place of duty.
• n. (Britain) A member of a group of football hooligans who wear expensive designer clothing to avoid police…
• n. One who receives relief for a night in a parish to which he does not belong; a vagrant.
• n. (video games, informal) A player of casual games.
• n. (dated) (Britain) A tramp.

detached

• adj. Of a house: not joined to another house on either side.
• adj. Having or showing no bias or emotional involvement; disinterested.
• adj. Not influenced by anyone else; characterized by an impersonal objectivity; impartial.
• v. simple past tense and past participle of detach.

indifferent

• adj. Not caring or concerned; uninterested, apathetic.
• adj. Mediocre, usually used negatively in modern usage.
• adj. Having no preference or bias, being impartial.
• adj. Not making a difference; without significance or importance.
• adj. (mechanics) Being in the state of neutral equilibrium.
• adv. (obsolete) To some extent, in some degree (intermediate between very and not at all); moderately, tolerably,…

insouciant

• adj. Carefree, nonchalant, indifferent; casually unconcerned.

nonchalant

• adj. Casually calm and relaxed.
• adj. Indifferent; unconcerned; behaving as if detached.

uninvolved

• adj. Not involved.
• adj. Emotionally distant.
• adj. Of potential mates, available because not in a committed relationship.

untroubled

• adj. Without worries; free from care.