The word "mis-spent" refers to the poor or inappropriate use of time or resources. Synonyms for this term include "wasted," "misspent," "squandered," "frittered away," "misused," and "misapplied." These words all suggest that something valuable has been lost or used up without achieving its intended purpose. They can be used to describe a range of situations, from missed opportunities and failed investments to misguided efforts and lost potential. Whether referring to one's personal time or larger societal issues, these synonyms for "mis-spent" convey a sense of regret and a desire to make better choices in the future.