Modifiers matching invalid:

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

Simple categories matching crippled:

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