Common noun; Adverb (fukushi)

inside; within

Word usually written using kana alone; Common noun; Adverb (fukushi)

while (e.g. one is young); during; within (e.g. a day); in the course of

Word usually written using kana alone; Common noun; Adverb (fukushi); As 〜のうち

among; amongst; (out) of; between

Word usually written using kana alone; Common noun; Also 裡, 裏; as 〜のうちに after a noun representing a state or condition

in (secret, chaos, poverty, etc.); amidst; with (e.g. success)

Common noun

within oneself; one's feelings; inner thoughts

内 only; Word usually written using kana alone; Common noun

we; our company; our organization

内 only; Word usually written using kana alone; Common noun; Also 家

one's home; one's family

内 only; Common noun

my spouse; my husband; my wife

内 only; Common noun; In a letter after the husband's name

signed on behalf of (husband's name) by his wife

内 only; Word usually written using kana alone; Pronoun; Kansai-ben; Primarily used by women and children

I; me

内 only; Archaic; Common noun

imperial palace grounds

内 only; Archaic; Common noun

emperor

opposite side; bottom; other side; side hidden from view; undersurface; reverse side

rear; back; behind

lining; inside

in the shadows; behind the scenes; offstage; behind (someone's) back

more (to something than meets the eye); hidden side (e.g. of one's personality); unknown circumstances; different side

proof

opposite (of a prediction, common sense, etc.); contrary

inverse (of a hypothesis, etc.)

Baseball

bottom (of an inning); last half (of an inning)

to betray; to turn traitor (to); to double-cross; to go back on; to be unfaithful (to)

to disappoint; to let down

one's mind

opposite; reverse; contrary

front and back; parallel to; back to back; adjacent to; inseparable from; inside and out

the reverse (side); back (side); other side; hidden side; behind the scenes

treachery; betrayal; perfidy

betrayer; traitor; turncoat; informer

backdoor; rear entrance; rear exit

Nouns which may take the genitive case particle 'no'

unauthorized; illicit; illegal

back (esp. of a building, etc.); rear; behind