摘要:Recently, the critical relationship between ideology and discourse becomes one of the main issues discussed in a wide range of disciplines. Language ideology is described as a dynamic and inconsistent process that must be studied in its given context. This paper aimed to explore the sociolinguistic aspects of language ideology embedded in online interaction of Arabic speakers. The ideology of language purism was the focus of this study. Critical Discourse Analysis was employed as a theoretical framework to analyze the data. The study showed the dynamic nature of discourse and asserted interdiscursive indexing of linguistic purism ideology among Arabic speakers on Twitter. Three key ideological dimensions namely nationalism, modernity and humanity have been recognized from the data corpus. The data asserted considerable influence of people’s cultural ideologies related to Islamic and Arabic identities on their language use and attitude. Modernity was also indicated to be one of the central factors influencing speakers’ perception about their languages and language use. English was described as a global language to be used to fulfill various integrative, communicative, and affective functions in modern life. Speakers’ comments about normality and personality in language use asserted the role those ideological perceptions play in their attitudes towards language purism. The intertextual analysis of the discourse revealed several linguistic features of texts under study including reporting speech, voicing, and shifting. These features served various pragmatic and social functions in this context.