Modifiers matching invalid:

• crippled,
• gangly,
• socially-unintelligent,
• good-hearted,
• brilliant,
• insightful,
• sympathetic,
• inspirational,
• stubborn,
• bumbling,
• optimistic,
• socially-awkward,
• innocent,
• weak,
• socially-unaware,
• rigid,
• arrogant,
• kind-hearted,
• gentle,
• aloof,
• scientific,
• inspiring,

Simple categories matching crippled:

• person,
• child,
• teacher,
• scientist,
• professor,
• king,
• royal,
• invalid,