Synonyms of the word

harum-scarum

• adj. wild, careless, irresponsible.
• adv. wildly, carelessly, irresponsibly.

adventurer

• n. One who enjoys adventures.
• n. A person who seeks a fortune in new and/or dangerous enterprises.
• n. A soldier of fortune, a speculator.
• n. A person who tries to advance their social position by somewhat devious means.
• n. (video games) A player of adventure games or text adventures.

carefree

• adj. Without cares; free of concern or worries; easy; casual; without difficulty.

daredevil

• n. A person who engages in very risky behavior, especially one who is motivated by a craving for excitement…
• adj. Recklessly bold; adventurous.

devil-may-care

• adj. Carefree, reckless, irresponsible.

freewheeling

• v. present participle of freewheel.

happy-go-lucky

• adj. carefree or untroubled.

hothead

• n. (pejorative) One who angers easily or goes in search of arguments or fights.
• n. One who reacts quickly and without thinking carefully first.

irresponsible

• adj. Lacking a sense of responsibility; incapable of or not chargeable with responsibility; unable to respond…
• adj. Not responsible; not subject to responsibility; not to be held accountable, or called into question.
• n. Someone who is not responsible.

lunatic

• n. An insane person.
• adj. crazed, mad, insane, demented.

madcap

• adj. impulsive, hasty or reckless; capricious.
• n. An impulsive, hasty, capricious person.
• n. (obsolete) An insane person, a lunatic.

pell-mell

• adj. Hasty, uncontrolled.
• adv. In haste, uncontrolledly, confusedly.

slaphappy

• adj. Incoherent from being struck; punch drunk.
• adj. In a humorous mood as a result of fatigue; silly from being tired.
• adj. Irresponsibly free.

swashbuckler

• n. A swordsman or fencer who engages in showy or extravagant sword play.
• n. A daring adventurer.
• n. A kind of period adventure story with flashy action and lighthearted tone.

venturer

• n. (archaic) One who ventures; a traveller or explorer.
• n. (business) One who undertakes a business venture.