SynBullying: A Multi-LLM Synthetic Conversational Dataset for Cyberbullying Detection
Arefeh Kazemi, Hamza Qadeer, Joachim Wagner, Hossein Hosseini, Sri Balaaji Natarajan Kalaivendan, Brian Davis
Abstract
We introduce SynBullying, a synthetic multi-LLM conversational dataset for studying and detecting cyberbullying (CB). SynBullying provides a scalable and ethically safe alternative to human data collection by leveraging large language models (LLMs) to simulate realistic bullying interactions. The dataset offers (i) conversational structure, capturing multi-turn exchanges rather than isolated posts; (ii) context-aware annotations, where harmfulness is assessed within the conversational flow considering context, intent, and discourse dynamics; and (iii) fine-grained labeling, covering various CB categories for detailed linguistic and behavioral analysis. We evaluate SynBullying across five dimensions, including conversational structure, lexical patterns, sentiment/toxicity, role dynamics, harm intensity, and CB-type distribution. We further examine its utility by testing its performance as standalone training data and as an augmentation source for CB classification.- Anthology ID:
- 2026.lrec-main.578
- Volume:
- Proceedings of the Fifteenth Language Resources and Evaluation Conference
- Month:
- May
- Year:
- 2026
- Address:
- Palma de Mallorca, Spain
- Editors:
- Stelios Piperidis, Núria Bel, Henk van den Heuvel, Nancy Ide, Simon Krek, Antonio Toral
- Venue:
- LREC
- SIG:
- Publisher:
- ELRA Language Resource Association
- Note:
- Pages:
- 7292–7306
- Language:
- URL:
- https://preview.aclanthology.org/ingest-lrec/2026.lrec-main.578/
- DOI:
- Cite (ACL):
- Arefeh Kazemi, Hamza Qadeer, Joachim Wagner, Hossein Hosseini, Sri Balaaji Natarajan Kalaivendan, and Brian Davis. 2026. SynBullying: A Multi-LLM Synthetic Conversational Dataset for Cyberbullying Detection. International Conference on Language Resources and Evaluation, main:7292–7306.
- Cite (Informal):
- SynBullying: A Multi-LLM Synthetic Conversational Dataset for Cyberbullying Detection (Kazemi et al., LREC 2026)
- PDF:
- https://preview.aclanthology.org/ingest-lrec/2026.lrec-main.578.pdf