Modifiers matching fee:

• professional,
• external,
• special,
• traditional,
• technical,
• fixed,
• necessary,
• annual,
• miscellaneous,
• regulatory,
• related,
• extra,
• monthly,
• statutory,
• additional,
• flat,
• academic,
• administrative,
• local,
• incidental,
• official,
• ongoing,
• hidden,
• personal,
• educational,
• governmental,
• upfront,
• environmental,
• significant,

Simple categories matching hidden:

• condition,
• danger,
• object,
• line,
• system,
• charge,
• riches,
• area,
• identification,
• weapon,
• expense,
• part,
• content,
• organs,
• group,
• surface,
• thing,
• cause,
• place,
• cost,
• character,
• tax,
• data,
• item,
• expenditure,
• location,
• force,
• resource,
• information,
• folder,
• message,
• feature,
• material,
• process,
• illness,
• instrument,
• image,
• assets,
• words,
• metal,
• quantity,
• unit,
• wall,
• disease,
• gem,
• extra,
• fastener,
• stuff,
• population,
• attribute,
• substance,
• earth,
• disability,
• charm,
• activity,
• impairment,
• pathology,
• creature,
• pitfall,
• treasure,
• structure,
• problem,
• corner,
• space,
• reinforcement,
• obstruction,
• property,
• dealer,
• fee,