Modifiers matching fee:

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

Simple categories matching incidental:

• purpose,
• effort,
• item,
• nature,
• expense,
• building,
• sign,
• condition,
• lighting,
• part,
• contaminant,
• activity,
• charge,
• thing,
• token,
• hazard,
• facility,
• repair,
• property,
• works,
• fee,
• installation,
• component,
• deliverable,
• cost,
• anachronism,
• equipment,
• structure,
• material,
• information,
• hardware,
• expenditure,
• use,
• discharge,
• water,
• contamination,
• detritus,
• discovery,
• terms,
• occupancy,
• music,
• service,
• work,
• disbursement,