nihongodoya.com/articles/japanese-onomatopoeia-master-guide
Study guide on Japanese onomatopoeia covering theoretical principles, grammatical frameworks, contextual dialogues, and practice exercises for learners preparing for JLPT and JFT-Basic exams.
VocabularyGrammarJLPT and other testsOnomatopoeiaJLPTKeigo and politenessAdjectivesConversationParticlesCultureListening practiceExample sentences