I am currently a professor of Japanese Linguistics and Culture at the University of Dhaka. I am formerly a Visiting Research Fellow (2014-2015) of The National Institute for Japanese Language and Linguistics (NINJAL) and Kobe Gakuin University (1994-1995). I am an awardee of the AILA Solidarity Award (2008) given by the International Association of Applied Linguistics. I have studied Psychology, Sociology, and Statistics at the University of Dhaka and Language Education at the Hyogo University of Teachers Education. I have taught the language history of Bangla at the Tokyo University of Foreign Studies as an Adjunct Faculty and Sociology of Bangladesh at the Kobe Gakuin University as a visiting professor. My areas of research interest cover General Linguistics, Sociolinguistics and Anthropological Linguistics, Language Policy, Language and politics focusing on the Language Situation of South Asia.

While teaching various academic subjects, I have also been pursuing research on various anthropological, socio-cultural, and linguistic issues as a faculty member. I have pursued most of my research while affiliated with my permanent workplace, i.e., the University of Dhaka. Moreover, I have undertaken research, having affiliated with a few Japanese universities as a visiting research fellow or as a member of a collaborative research team. I conducted research at Kobe Gakuin University (October 1994 to March 1995) and the National Institute for Japanese Language and Linguistics (October 2013 to September 2015) during my tenure as a visiting fellow.

The research I have pursued or have been pursuing to this date belongs to various disciplines of study. In the primary stage of my career, I have mainly pursued research on numerous themes of linguistics that belong to the subfields of i) general linguistics and comparative linguistics, and ii) second language acquisition. In the second phase of my career, I have mainly pursued research on numerous themes of social, anthropological, and dyadic issues in linguistics, which belong to the subfields of i) Sociolinguistics, ii) Anthropological Linguistics, iii) Language Policy, and iv) Education Policy. I have published the outcomes of this research in the form of articles and books, and the ones worth mentioning are as follows.

A. General Linguistics and Comparative Linguistics

1. On the Identical Function of Bangla and Japanese Substantive Verbs as Aspectual Marker. The Japanese Language Education Around the World. Vol.7. pp. 187-199. June 1997.

2. Subject-Verb Agreement: A Cross-Linguistic Study. The Dhaka University Studies. Vol. 56. No. 1, 131~158, June 1999.

3. Modality in Linguistics with Reference to that in Logic. Indian Linguistics. Vol.70, No. 1-4, pp. 103~113, 2009. ISSN: 0378-0759

4. Participial Relative Clause in Bangla. Journal of the Asiatic Society of Bangladesh, Vol. 55, No.2, pp. 293-304, December 2010.

5. বাংলা ব্যাকরণে শব্দ ও তার শ্রেণিকরণ: ভাষাবিজ্ঞানের আলোকে একটি পর্যালোচনা (The Words and Their Classification in Bangla: A Review). Center for Advanced Studies in Humanities, 15 September 2013.

6. Revisiting Relative Clauses in Japanese, with Reference to Bangla. NINJAL Research Paper (国立国語研究所論集). November 2014. Vol. 8.

7. Nominalization and Its Role in the Formation of Noun Phrase in Japanese. Journal of Japanese Language Education and Linguistics, vol.05, August 2021. E-ISSN: 2615-0840, P-ISSN: 2597-5277

8. Constructing Modal System in Bangla from the Perspective of Grammaticalization. Osmania Papers in Linguistics. Forthcoming issue. ISSN 0970-0277

B. Second Language Acquisition

1. The Effects of the Semantic and Morphosyntactic Constraints in the Developing Interlanguage of Modality in Japanese. The Dhaka University Studies Vol. 64, No. 2, December 2007.

2. Ph.D. thesis： A Study of the Learner Variety of Modality in Japanese from the Perspective of Grammaticalization. [日本語モダリティにおける学習者言語変種の研究―文法化方法を通じて]. April 2008.

3. Modality and Its Learner Variety in Japanese. Bern, Brussels, Frankfurt, New York, and Oxford: Peter Lang AG, April 2012.

C. Sociolinguistics

1. On the Associative Changes of Some Dvandvas of Bangla Language: A Case Study. The Journal of the Asiatic Society of Bangladesh. Vol. 43, No. 2, pp. 14–24, Dec 1998. ISSN 1015−6836

2. Convergence of Languages in Asia as a Factor of Conciliation of Asian Values. In Asian Value in the Globalizing World of the 21^st Century. Asia Pacific Research Center, Kobe Gakuin University, Japan. pp.141~146, March 2007. OCLC Number:1223419457

3. Language Situation in Bangladesh. The Dhaka University Studies. Vol. 67, No. 2, December 2010. ISSN: 15627195

4. On the Classification of Varieties of Bangla Spoken in Bangladesh. Bangladesh University of Professional (BUP) Journal. Vol. I, Issue 1, pp. 130-139, September 2012.

5.「言語状況から見てバングラデシュの社会文化的構成」月刊誌『アジ研ワールドトレンド』２０１５年０１月号。 [The Socio-cultural Makeup of Bangladesh in the Purview of the Language Situation. Monthly World Trend. January 2015.

6. On the Nationalism of Bangla Speech Communities. In Beyond the Horizon: Prismatic Writings on Social Sciences. Paschimbanga Anchalik Itihas, O Loksanskriti Charcha Kendra. July, 2018. Kolkata, India. Vol. I.

7. (Co-authored with Kishie Shinsuke, Sakoguchi Yukako). On The Advantages of Language Spread by Sea Route in The Seto Inland Sea Region. 9th Congress of the International Society for Dialectology and Geolinguistics. Lithuania, 23–27 July, 2018. In D. Kardelytė-Grinevičienė, J. Jaroslavienė, A. Aleksaitė, A. Girdzijauskaitė.Vilnius: Institute of the Lithuanian Language, 2018. ISBN 978-609-411-217-1 (e-book)

8. Faquire, Razaul Karim. ভাষা-সংসর্গ বিদ্যার নিরিখে বাংলা ভাষার সৃজন, ঋদ্ধায়ন ও অবনমন পরিক্রমা (The Process of Creation, Enrichment and Degradation of Bangla Language in the Framework of Contact Linguistics). Dhaka: Somoy Prokashon, February 2022. ISBN 978-984-458-387-0

D. Anthropological Linguistics and Language Contact

1. Language Contact and its Linguistic Consequences due to Migration at the Chittagong Hill Tracts in Bangladesh, The Journal of Asian Linguistic Anthropology, January 2019, vol.1 (1), pp.11-33.

2. Language Contact across Ethnic Boundaries: The case of the Chittagong Hill Tracts in Bangladesh. The Journal of Asian Pacific Communication. 32:1, 2022. ISSN 0957-6851 | E-ISSN 1569-9838

E. Language Policy and Planning

1. বাংলাদেশ ইংরেজী ভাষা শিক্ষা ব্যবস্থার চালচিত্র ও সংস্কারের রূপরেখা (The English Language Education System in Bangladesh and An Outline of Its Reform). Dhaka: Adorn Publication, February 2017.

2. Globalization as an Underpinning Ideology of Foreign Language Education Policy in Bangladesh. 神戸学院大学共通教育研究紀要 (Kobe Gakuin University Journal of General Education). March 2017, Vol. II.

3. Reconsidering the Prevalent English Language Education System in Bangladesh. Mother Language: The Journal of International Mother Language Institute. December 2017. 1 (1), 101-148.

4. Consolidating English as a Medium of Instruction In The Education System of Bangladesh. In Dubrovskaya, T.V. III International Conference Proceedings on Modern Developments in Linguistics and Language Teaching. April 24-27, 2019. Penza State University, Penza, Russia.

5. Consolidating English as a medium of instruction in the education system of Bangladesh, Journal of The Asiatic Society of Bangladesh (Humanities). The Asiatic Society of Bangladesh, June 2021. vol. 66(1), pp.43-59.

6. ঢাকা বিশ্ববিদ্যালয়স্থ আধুনিক ভাষা ইনস্টিটিউটের লক্ষ্যাভিমূখী সংস্কার ও উন্নয়নের রূপকল্প (Visionary Reform and Development of the Modern Language Institute at Dhaka University). Dhaka: Pankouri, February 2022.

The notable works are one book numbered B3 and seven articles numbered A1, A6, A7, B1, C3, D1, and E3. Among these eight works, the book numbered B3 and the articles numbered A6 and A7 chart the linguistic analyses for the grammatical categories of moods, relative clauses, and Nominals in Japanese in the framework of modern linguistics. These three works of mine are provided with the revisiting of the grammatical categories of moods, relative clauses, and nominals in Japanese. In my works, I have shown that the grammatical categories of Moods, Relative clauses, and nominals are realized in the morphosyntactic structure through grammatical processes of modalization, relativization, and nominalization, which require theoretical underpinning. I found that the requisite theoretical underpinning of these grammatical categories remained ambiguous, reflecting the shortcomings of traditional Japanese linguistics in the analyses of moods, relative clauses, and nominals. In view of that, I have formulated a theoretical framework to initiate the linguistic analysis of the grammatical categories of moods, relative clauses, and nominals and have reconstructed each of them to fit them into the newly formulated framework.