List: adverb (fukushi)

onomatopoeic or mimetic word  adverb  adverb taking the と particle 

• (speaking) bluntly, frankly, straightforwardly, openly, directly, unhesitantingly, without reserve, outspokenly

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

• heavily, profoundly

JLPT N1  onomatopoeic or mimetic word  adverb 

• in a line, in a row

onomatopoeic or mimetic word  adverb  adverb taking the と particle 

• rapidly, quickly, briskly, steadily, by leaps and bounds
• booming (e.g. of a drum)

rarely used kanji form  usually written using kana alone  adverb  interjection 

• so much, so often, so long, so many, particularly, especially
• oh, yes!, that's it, I remember
• that's right, quite, indeed

onomatopoeic or mimetic word  adverb  noun taking the genitive case particle の  adjective (generic)  suffix 

• reasonably, fairly, all right, moderate
• hurriedly, in a rush, having barely finished
• approximately, about, or so

usually written using kana alone  adverb 

• in spite of oneself, somehow, without knowing why, vaguely

irregular okurigana  expression  noun  noun (generic)  adverb 

• after that, afterwards, thereafter

adverb 

• in fact

popular  rarely used kanji form  search-only kanji form  usually written using kana alone  adverb  noun  noun (generic)  conjunction  noun taking the genitive case particle の  adjective (generic) 

• in the first place, to begin with, from the start, originally, ab initio
• after all, anyway, actually, well, ..., ... on earth (e.g. "what on earth?"), ... in the world (e.g. "why in the world?")
• beginning, start