List: adverb (fukushi)

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

• repeatedly opening and closing (one's mouth), gasping
• flapping (e.g. shoe sole), gaping open and shut
• heartily (eating), devouring, munching, gobbling

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

• blinking (in surprise)

search-only kana form  onomatopoeic or mimetic word  adverb taking the と particle  adverb  colloquial  noun  noun (generic) 

• gaping (e.g. mouth, wound), (opening) wide
• snapping up (e.g. bait), biting into (food), gobbling up
• plagiarism, rip-off, lifting, cribbing

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

• wide open (of eyes), large and bright (eyes)

onomatopoeic or mimetic word  な adjective  adjective (generic)  adverb  noun  noun (generic) 

• crispy, crunchy
• tearing, ripping, cracking
• spirited, energetic, vigorous
• brand-new and high quality (clothing), well-starched, crisp (bill)

onomatopoeic or mimetic word  adverb  adverb taking the と particle  な adjective  adjective (generic)  historical term  noun  noun (generic) 

• kapow, bang, slap, clap
• bulging, filled to bursting
• prostitute (catering to Occupation soldiers in Japan after WWII)

JLPT N1  usually written using kana alone  adverb 

• by extension, in turn, by the same token, in addition, as well, consequently

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

• twitching

popular  rarely used kanji form  usually written using kana alone  adverb  adverb taking the と particle 

• acutely (feel), keenly, severely
• tightly, hard

popular  rarely used kanji form  JLPT N1  usually written using kana alone  adverb  な adjective  adjective (generic) 

• intently, single-mindedly, devotedly, solely, earnestly, with all one's heart