Be found lacking and Fall flat

Fall flat and be found lacking are semantically related in be unsuccessful topic. In some cases you can use "Fall flat" instead a verb phrase "Be found lacking", when it comes to topics like fail to attain goal.

Fall flat verb - Fail utterly; collapse.

Be found lacking and fall flat are semantically related in be unsuccessful topic. Sometimes you can use "Be found lacking" instead a verb phrase "Fall flat", if it concerns topics such as fail to attain goal.