mis·step 
/ˌmɪsˈstɛp/ noun
plural mis·steps /ˌmɪsˈstɛp/ noun [count] chiefly US : an action or decision that is a mistake
▪ Their decision to relocate the company was a major misstep. ▪ make a strategic misstep [=blunder]
▪ Their decision to relocate the company was a major misstep. ▪ make a strategic misstep [=blunder]
