[noun] [U + singular or plural verb] - the place where a person or thing isMoreno's whereabouts are unknown, although associates have said he was planning a trip to Guatemala.Trupin is thought to be in the Caribbean, although his exact whereabouts is a mystery.I don't suppose you know the whereabouts of my silver pen, do you?
WHEREABOUTS
Meaning of WHEREABOUTS in English
Cambridge English vocab. Кембриджский английский словарь. 2012