adverb taking the 'to' particle, onomatopoeic or mimetic
1. chattering (teeth)adjectival nouns or quasi-adjectives (keiyodoshi), onomatopoeic or mimetic
2. (frozen, worried) stiffadjectival nouns or quasi-adjectives (keiyodoshi), nouns which may take the genitive case particle 'no', onomatopoeic or mimetic
3. rigid (personality, thinking, etc.); inflexible; overly seriousadverb (fukushi), nouns which may take the genitive case particle 'no', onomatopoeic or mimetic
4. voracious (e.g. work, study); without slack or pause