Invest/ɪnˈvest/ Definition 1 of 4Pro Tip 1/3Financial Growth Used to talk about spending money with the intention of making a profit. I'm planning to invest in a start-up company. Pro Tip 2/3Long-Term Commitment Implies waiting for a while before seeing any benefits or profit. Investing in your education may take time but is worthwhile in the long run. Pro Tip 3/3Research Required Before investing money, one should research to make informed decisions. Always do your homework before you decide to invest in the stock market.