List: adverb (fukushi)

usually written using kana alone  adverb 

• extremely, very, terribly, awfully, tremendously, incredibly, immensely

adverb 

• completely, entirely, totally

usually written using kana alone  adverb 

• just how, how (dare you)

onomatopoeic or mimetic word  な adjective  adjective (generic)  noun taking the genitive case particle の  adverb  noun or participle taking the aux. verb する  noun (generic) 

• oily, greasy, sticky

onomatopoeic or mimetic word  adverb  adverb taking the と particle  noun  noun (generic)  noun or participle taking the aux. verb する 

• opening (one's mouth) wide, saying "aah"
• crying loudly, wailing, bawling

onomatopoeic or mimetic word  adverb  adverb taking the と particle 

• plop, splash

noun  noun (generic)  adverb 

• sail with the wind at its back
• aback

usually written using kana alone  adverb 

• gasping, breathing heavily

expression  adverb 

• at will

rarely used kanji form  adverb 

• presumably, conceivably, in my opinion, in my view, I think (that), upon thought, upon reflection