(1)不合格的；不能胜任的
指不适合从事某项工作。就父母与子女的关系而言，该术语通常要引入道德懈怠的含义，但这并不是必须的，除了道德缺陷外，任何原因的不适合都会导致父母不适于承担监护之责。

(2)不合格的；不适用的
指商品或服务不适于特定的用途。

• disintermediation
• disjunctim
• disjunctive allegation
• disjunctive condition
• disjunctive term
• dislocation
• disme
• dismiss
• dismissal
• dismissal and nonsuit
• dismissal compensation
• dismissal for cause
• dismissal without prejudice
• dismissal with prejudice
• dismissed for want of equity
• dismortgage
• disobedience
• disobedient child
• disorder
• disorderly
• disorderly conduct
• disorderly house
• disorderly persons
• disorderly picketing
• disorientation