(1)民事义务
指可通过民事诉讼强制执行的义务。

(2)法律上的义务
受法律约束，可由法院强制执行的义务。

• in commendam
• in commerce
• in commerce test
• In commodato haec pactio, ne dolus praestetur, rata non est.
• Incommodum non solvit argumentum.
• in common
• in communi
• incommunicado
• incommunication
• incommutable
• incompatibility
• incompatible
• incompatible offices
• incompatible things
• incompetence
• incompetency
• incompetency proceeding
• incompetent
• incompetent evidence
• incompetent, irrelevant, and immaterial
• incompetent person
• incompetent to stand trial
• incomplete dedication
• incomplete gift
• incomplete instrument