List: word usually written using kana alone

obsolete kanji  usually written using kana alone  noun  noun (generic) 

• newt (esp. the Japanese fire belly newt, Cynops pyrrhogaster)

rarely used kanji form  usually written using kana alone  noun  noun (generic) 

• sea anemone

JLPT N1  usually written using kana alone  noun  noun (generic)  adverb 

• once, some time ago

search-only kanji form  usually written using kana alone  adverb 

• conspicuously, noticeably, remarkably, strikingly, outstandingly, especially, particularly

popular  rarely used kanji form  ateji  JLPT N5  usually written using kana alone  adverb  interjection  expression 

• a little, a bit, slightly
• just a minute, for a moment, briefly
• somewhat, rather, fairly, pretty, quite
• (not) easily, (not) readily
• hey!, come on, excuse me
• thanks, but no, not feasible, not possible

usually written using kana alone  noun taking the genitive case particle の  adjective (generic)  adverb 

• fully fledged, full-fledged, proper, competent, qualified, full-grown

usually written using kana alone  adverb 

• still more, especially

usually written using kana alone  noun  noun (generic) 

• pair, couple, brace

usually written using kana alone  adverb  noun taking the genitive case particle の  adjective (generic) 

• for a while, for some time, for a period

usually written using kana alone  noun  noun (generic) 

• overflow