Am thrifty means being economical with money and resources. Antonyms for am thrifty include overspending, extravagant, wasteful, and reckless. When someone is not thrifty, they tend to spend money impulsively and make careless decisions with their finances, leading to financial problems in the long run. Overspending can lead to debt, stress, and anxiety, whereas being thrifty can help an individual save for the future and lead a more stable financial life. It is essential to be mindful of our spending habits and make conscious decisions to stay within our means and save for our future goals.