Modifiers matching fee:

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

Simple categories matching extra:

• copy,
• equipment,
• instruction,
• activity,
• therapy,
• attention,
• hardware,
• rod,
• bag,
• meeting,
• facility,
• item,
• instrumentation,
• exhibit,
• fluid,
• component,
• munition,
• word,
• ability,
• information,
• assistance,
• button,
• clothing,
• payment,
• food,
• effect,
• attribute,
• cd,
• club,
• motion,
• healthcare,
• commitment,
• input,
• goody,
• part,
• pay,
• character,
• repayment,
• footwear,
• festivity,
• income,
• round,
• decoration,
• game,
• sweetener,
• flavor,
• drink,
• data,
• treatment,
• training,
• detail,
• vehicle,
• incentive,
• skill,
• protection,
• option,
• sustenance,
• surface,
• supply,
• mixture,
• keepsake,
• device,
• room,
• cell,
• power,
• signal,
• condiment,
• site,
• charge,
• construction,
• help,
• occasion,
• furnishing,
• condition,
• service,
• herb,
• toy,
• class,
• touch,
• space,
• fat,
• group,
• feature,
• ornament,
• challenge,
• beverage,
• liquid,
• letters,
• control,
• responsibility,
• payload,
• implement,
• acid,
• indication,
• capability,
• accessory,
• mode,
• assignment,
• topic,
• page,
• work,
• user,
• sport,
• nutrient,
• area,
• difficulty,
• module,
• performance,
• expense,
• care,
• content,
• keyboard,
• clothes,
• dictionary,
• excursion,
• drive,
• precaution,
• material,
• embellishment,
• tissue,
• fee,
• course,
• measure,
• bedding,
• benefit,
• light,
• flavoring,
• sugar,
• medication,
• process,
• duty,
• fuel,
• piece,
• gain,
• weapon,
• fitting,
• thing,
• bit,
• feed,
• package,
• interface,
• instrument,
• layer,
• file,
• painkiller,
• peripheral,
• works,
• spice,
• premium,
• review,
• art,
• effort,
• requirement,
• degree,
• flair,
• image,
• gadget,
• substance,
• appliance,
• unit,
• sound,
• furniture,
• support,
• apparel,
• property,
• provisions,
• structure,
• animal,
• key,
• flavouring,
• medium,
• sensor,
• task,
• job,
• parameter,
• frill,
• fastener,
• info,
• gear,
• sheet,
• garment,
• details,
• fiber,
• place,
• software,
• description,
• ingredient,
• seasoning,
• tool,
• stuff,
• event,
• guidance,
• weight,
• subject,
• spermicide,
• article,
• medicine,