The term 'worked hard' can be expressed in many different ways. SLAVED, STROVE, LABORED, TOILED, travailed, and moiled are all six- or seven-letter words that can be used to describe someone who worked hard. SLAVED implies a sense of servitude, while STROVE suggests a great effort was put forth. LABORED implies physical labor, while TOILED implies a long and tedious task. Travailed implies a great struggle, and moiled implies a great deal of effort. All of these words can be used to describe someone who worked hard.