Modifiers matching adversary:

• larger,
• stronger,
• supernatural,
• dangerous,
• wicked,
• internal,
• individual,
• evil,
• sophisticated,
• old,
• powerful,
• familiar,

Simple categories matching stronger:

• predator,
• material,
• animal,
• opponent,
• component,
• light,
• beer,
• rock,
• wood,
• synthetic,
• web,
• alloy,
• metal,
• adversary,
• drug,
• analgesic,
• passion,
• entity,
• power,
• substance,
• force,
• prey,
• fish,
• structure,
• character,
• unit,
• emotion,
• dragon,
• glue,
• ability,
• fibre,