Jisho

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Adverb taking the 'to' particle
1. chattering (teeth)Onomatopoeic or mimetic word
Na-adjective (keiyodoshi)
2. (frozen, worried) stiffOnomatopoeic or mimetic word
Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no'
3. rigid (personality, thinking, etc.); inflexible; overly seriousOnomatopoeic or mimetic word
Adverb (fukushi), Noun which may take the genitive case particle 'no'
4. voracious (e.g. work, study); without slack or pauseOnomatopoeic or mimetic word
Other forms
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