1 inside

2 inner

3 internal

4 within

5 interior

1 content

2 substance

3 details

4 classifier: 个 gè

5 classifier: 项 xiàng

1 heart

2 innermost being

3 (math.) incenter

1 domestic

2 internal (to a country)

3 civil

1 client

2 customer

1 internal trouble and outside aggression (idiom); in a mess both domestically and abroad

1 internal trouble and outside aggression (idiom); in a mess both domestically and abroad

1 every family (idiom)

1 lit. outside-flexible, inside-firm (idiom)

2 fig. velvet glove

1 magnanimous on the outside, but hateful on the inside (idiom)