Modifiers matching neutral:

• dark,
• urban,
• pale,
• earthy,
• natural,
• new,
• soft,
• warm,
• impartial,
• small,
• energetic,
• abundant,

Simple categories matching energetic:

• photon,
• person,
• musician,
• dance,
• adventurer,
• chemical,
• singer,
• comedian,
• actor,
• advisor,
• cyclist,
• product,
• material,
• eruption,
• neutron,
• process,
• villain,
• rapper,
• composer,
• preacher,
• athlete,
• teenager,
• billionaire,
• game,
• hero,
• campaigner,
• politician,
• neutral,
• substance,
• object,
• contaminant,
• king,
• phenomenon,
• action,
• clown,
• component,
• neighbour,
• sportsman,
• arthropod,
• chef,
• child,
• propagandist,
• food,
• director,
• metabolite,
• reaction,
• particle,
• dancer,
• waste,
• warrior,
• radiation,
• ceo,
• activity,
• thief,
• thing,
• processing,
• pianist,
• powder,
• event,
• property,
• metal,
• businessman,
• nutrient,
• punk,
• treatment,
• surface,
• tyrant,
• system,
• guitarist,
• president,
• quality,
• solid,
• explosive,
• pilot,
• drummer,
• compound,
• dog,
• writer,
• cofactor,
• tissue,