List: Essential

Wordpopular  obsolete reading  obsolete kanji  JLPT N5  usually written using kana alone  pronoun 

• where, what place
• how much (long, far), what extent

Wordpopular  obsolete kanji  JLPT N5  noun  noun (generic)  historical term  archaic 

• country, state
• region
• national government, central government
• home (i.e. hometown, home country)
• province (of Japan)
• land, earth

Wordexpression  い adjective  adjective (generic) 

• unable to wait

Wordarchaic  suffix  noun or verb acting prenominally  adjective (generic)  slang  abbreviation  interjection 

• that is in
• who is called, that is called
• that is
• I see

Wordpopular  obsolete reading  JLPT N2  usually written using kana alone  noun  noun (generic) 

• eyelid

Wordpopular  JLPT N5  い adjective  adjective (generic) 

• heavy, weighty
• heavy (feeling), depressed, gloomy, blue, uneasy
• slow, sluggish, lumbering, ponderous, clumsy
• important (position, responsibility, etc.), serious, grave
• serious (punishment, illness, etc.), severe, critical
• solid, established, dignified, sensible

Wordpopular  rarely used kanji form  JLPT N5  い adjective  adjective (generic) 

• fast, quick, rapid, swift, speedy, brisk, prompt
• early, soon, earlier than usual
• premature, too soon, too early
• easy, simple, quick, fast
• as soon as ..., the moment ..., the instant ...

Wordpopular  JLPT N4  い adjective  adjective (generic) 

• shallow, superficial
• slight (wound), light (sleep), pale (colour), inadequate (knowledge)
• short (time), early, young

Wordpopular  adverb  noun (prefix)  noun (generic)  noun (suffix)  noun 

• already, now, by this time
• quick, early, fast, rapid

Wordpopular  noun (suffix)  noun (generic)  noun  adverb 

• as soon as..., just after..., immediately after...
• hurriedly, in haste, quickly, promptly, early