Modifiers matching invalid:

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

Simple categories matching gentle:

• person,
• spice,
• hill,
• child,
• lover,
• mother,
• friend,
• god,
• fabric,
• invalid,
• robot,
• spy,
• therapy,
• hero,
• bureaucrat,
• ingredient,
• herb,
• animal,
• campaigner,
• creature,
• father,
• grain,
• token,
• cleanser,
• modality,
• sidekick,
• adventurer,
• sound,
• poet,
• sedative,
• politician,
• shampoo,
• president,