rarely used kanji form  formal or literary term  usually written using kana alone  expression 

• must not (do), should not, do not
• cannot

formal or literary term  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb 

• retiring to bed (esp. due to illness)
• bed

yojijukugo  formal or literary term  conjunction 

• getting back to the subject at hand, ..., (but) to return to the main topic, ..., so much for digressions, ...

formal or literary term  expression  noun  noun (generic) 

• (a) letter, person carrying a letter

formal or literary term  noun  noun (generic) 

• letter

formal or literary term  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb 

• apprehension, uneasiness

honorific language  formal or literary term  Ichidan verb  verb (generic)  transitive verb 

• to say, to state

formal or literary term  noun taking the genitive case particle の  adjective (generic)  noun  noun (generic)  archaic 

• having served time in prison, ex-convict
• eunuch

formal or literary term  noun  noun (generic)  archaic 

• crowing of a cock, crowing of a rooster
• cockcrow, dawn, daybreak
• hour of the Ox (around 2am)

formal or literary term  noun  noun (generic) 

• outstanding person, distinguished person, person of high caliber