Meaning of INSEPARABLE in English
[adjective] - (of two or more people) such good friends that they spend most of their time together, or (of two or more things) so closely connected that they cannot be considered separatelyWhen we were kids Zoe and I were inseparable.Unemployment and inner city decay are inseparable issues which must be tackled together.
Cambridge English vocab. Кембриджский английский словарь. 2012