Grieve-JA: A Psycholinguistic Dictionary for Grievance-Fuelled Language in Japanese

Emilie Francis


Abstract
Since the early 2010s, internet nationalists have been active on Japanese forums, blogs, and social networking services, spreading hate speech and conspiracy. At the same, the involuntary celibate community has gained international notoriety due to acts of mass violence committed by self-identified members. Despite several instances of misogyny motivated violence in Japan, there is little known about Japanese involuntary celibate culture and identity. This paper introduces Grieve-JA, a psycholinguistic dictionary for the analysis of violence, threat, and grievance in Japanese text. The paper outlines the process of developing the dictionary and evaluating it across different corpora representing both neutral and grievance-filled language. As a final measure, the dictionary is used to compare comments from two forums on the Japanese anonymous message board 5channel with comments from Bluesky. Results indicate that Grieve-JA is a useful tool for analyzing extreme language in Japanese as a complement to other psycholinguistic measures.
Anthology ID:
2026.nlpaics-1.2
Volume:
Proceedings of the Second International Conference on Natural Language Processing and Artificial Intelligence for Cyber Security
Month:
June
Year:
2026
Address:
Alicante, Spain
Editors:
Ruslan Mitkov, Rafael Muñoz, Elena Lloret, Tharindu Ranasinghe, Ernesto L. Estevanell-Valladares, Salima Lamsiyah, Andrés Montoyo, Saad Ezzini
Venue:
NLPAICS
SIG:
Publisher:
Department of Languages and Information Systems, University of Alicante
Note:
Pages:
11–24
Language:
URL:
https://aclanthology.org/2026.nlpaics-1.2/
DOI:
Bibkey:
Cite (ACL):
Emilie Francis. 2026. Grieve-JA: A Psycholinguistic Dictionary for Grievance-Fuelled Language in Japanese. In Proceedings of the Second International Conference on Natural Language Processing and Artificial Intelligence for Cyber Security, pages 11–24, Alicante, Spain. Department of Languages and Information Systems, University of Alicante.
Cite (Informal):
Grieve-JA: A Psycholinguistic Dictionary for Grievance-Fuelled Language in Japanese (Francis, NLPAICS 2026)
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PDF:
https://aclanthology.org/2026.nlpaics-1.2.pdf