Modifiers matching acid:

• organic,
• fatty,
• nonvolatile,
• oxidizable,
• unwanted,
• heterocyclic,
• monounsaturated,
• weak,
• possible,
• dangerous,
• available,
• inorganic,
• natural,
• simple,
• liquid,
• accessible,
• conventional,
• endogenous,
• active,
• chemical,
• dietary,
• agricultural,
• hydroxy,
• strong,
• ordinary,
• base,
• heavy,
• little,
• aggressive,
• aromatic,
• industrial,
• hard,
• volatile,
• common,
• carboxylic,
• monovalent,
• saturated,
• acetic,
• solid,
• metabolic,
• cyclic,
• free,
• nontoxic,
• safe,
• poisonous,
• hydrophilic,
• amino,
• wet,
• soft,
• additional,
• gaseous,
• useful,
• neutral,
• preservative,
• acid,
• corrosive,
• aqueous,
• digestive,
• cellular,
• heterogeneous,
• essential,
• nitrogenous,
• popular,
• aliphatic,
• polyunsaturated,
• lipophilic,
• monocarboxylic,
• phosphorous,
• exogenous,
• wholesome,
• relevant,
• hydrophobic,
• basic,
• unusual,
• dissolved,
• edible,
• unsaturated,
• extra,
• polymeric,
• small,
• acidic,
• mild,

Simple categories matching extra:

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