Trang Thi Thuy Nguyen* and John Hajek Making the case for linguicism: revisiting theoretical concepts and terminologies in linguistic discrimination research https://doi.org/10.1515/ijsl-2021-0028 Received February 6, 2021; accepted December 17, 2021; published online April 15, 2022 Abstract: In an effort to foreground the concept of linguicism, this article provides a critical review of the research literature on linguistic discrimination, focusing on common concepts and terms applied to characterise the issue. Giving particular attention to studies which directly consider discrimination based on language or linguistic factors, we identify three main groups of concepts and terms which are widely used, including (a) race-based concepts, (b) language variation-based concepts and (c) general terms. The construction, meaning and usage of the concept of ‘linguicism’ are discussed separately from these three groups. Although race-based concepts, language variation-based concepts and general terms are extremely useful for particular research purposes, they may not be applicable to describe all or other forms of linguistic discrimination. It is argued that linguicism is a powerful theoretical construct, which can be used as an umbrella concept to capture the full range of linguistic discrimination issues. Suggestions are also presented for future research in relation to social factors associated with linguistic discrimination and research context, which is important to shed light on otherwise potentially unheard voices in linguistic discrimination scholarship. Keywords: accentism; linguicism; linguistic discrimination; linguistic racism; native-speakerism; raciolinguistics 1 Introduction On November 26, 2020, the French Lower House of Parliament (Assembl ´ ee Nationale) approved the first reading of a bill forbidding accent-based discrimi- nation, identified as “la glottophobie”, which makes this form of discrimination an *Corresponding author: Trang Thi Thuy Nguyen, The University of Queensland, QLD 4072, Brisbane, Australia, E-mail: trang.nguyen@uq.edu.au. https://orcid.org/0000-0001-8005-4567 John Hajek, The University of Melbourne, VIC 3010, Melbourne, Australia. https://orcid.org/0000- 0003-1335-4273 IJSL 2022; 275: 187–220