"Romani is the only Indo-Aryan language (related to Hindi, Bengali, Panjabi, and so on) that has been spoken exclusively in Europe since the middle ages. Speakers generally call their language řomani čhib 'the Romani language', or řomanes, 'in a Rom way'. Both names are based on the word řom, which means literally 'a member of the (Romani) group' as well as 'husband' (with the feminine counterpart řomni 'wife')." (Quoted from paper)