行方ゆくえ知しれずゆくえしれずMeanings1expressionmissing; whereabouts unknownSet phrase used when a person's location is unknown, often with a nuance of concern or mystery. Similar to 行方不明 but more literary or dramatic.See also: 行方不明彼かれは三みっ日か前まえから行方ゆくえ知しれず