Synonyms of the word

insouciant

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

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.

nonchalant

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

unconcerned

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