misstep
英[ˌmɪs'step] 美[ˌmɪs'step]
"he recited the whole poem without a single trip"
"he arranged his robes to avoid a trip-up later"
"confusion caused his unfortunate misstep"
A misstep, an error in tact or tone, which would have hurt our friendship.
出自:A. LurieFor a mountain goat one misstep could be fatal.
出自:Scientific American