(1)弱智
包括各种形式的智力低弱，但并不一定表示无行为能力。

(2)弱占有；弱保有
例如租借土地保有〔leasehold〕弱于土地自由保有〔freehold〕。

• intermediate interest
• intermediate lien
• intermediate order
• intermediate point
• intermediate port
• intermediate rate
• intermediate witness
• intermediation
• intermediator
• interment
• intermingling
• in terminis terminantibus
• inter minora crimina
• intermittent easement
• intermittent injury
• intermittent stream
• intermittent watercourse
• intermixture
• intermixture of goods
• intern
• internal
• internal act
• internal administration
• internal affairs of corporation
• internal audit