Modifiers matching grump:

• mean,
• grouchy,
• covetous,
• penny-pinching,
• fastidious,
• wealthy,
• impatient,
• misanthropic,
• gruff,
• miserly,
• arrogant,
• ill-tempered,
• condescending,
• heartless,
• jealous,
• grizzled,
• rich,
• greedy,
• principled,

Simple categories matching rich:

• poultry,
• billionaire,
• miser,
• soup,
• person,
• pioneer,
• oil,
• behaviour,
• tycoon,
• king,
• businessman,
• sauce,
• tyrant,
• herb,
• shellfish,
• fabric,
• politician,
• attribute,
• ceo,
• rock,
• waste,
• timber,
• fuel,
• liquor,
• limestone,
• investor,
• publisher,
• part,
• feed,
• emperor,
• animal,
• mineral,
• flora,
• surface,
• cereal,
• capitalist,
• matter,
• dictator,
• coal,
• fibre,
• compound,
• stuff,
• chemical,
• wife,
• drink,
• cue,
• application,
• scientist,
• filling,
• molecule,
• structure,
• foodstuff,
• husband,
• domain,
• gentleman,
• content,
• tissue,
• grain,
• flower,
• brown,
• villain,
• child,
• forage,
• matrix,
• criminal,
• thing,
• product,
• red,
• work,
• art,
• fish,
• behavior,
• autocrat,
• dish,
• inventor,
• dressing,
• fruit,
• berry,
• furnishing,
• aristocrat,
• liquid,
• beverage,
• bully,
• tree,
• interaction,
• smuggler,
• ingredient,
• experience,
• singer,
• culture,
• format,
• fool,
• cluster,
• material,
• textile,
• atmosphere,
• deposit,
• cake,
• breakfast,
• macromolecule,
• cheese,
• service,
• green,
• activity,
• program,
• seafood,
• pianist,
• recluse,
• confection,
• royal,
• feature,
• information,
• resource,
• medium,
• website,
• vegetable,
• pastel,
• philanthropist,
• wood,
• area,
• finish,
• nut,
• system,
• dessert,
• playboy,
• pasta,
• bird,
• tradition,
• client,
• condiment,
• organization,
• organs,
• document,
• fiber,
• grump,
• meat,
• wine,
• hardwood,
• aroma,
• leaf,
• communication,
• technologist,
• metal,
• waveform,
• meal,
• musician,
• decoration,
• pudding,
• detail,
• orphan,
• prey,
• people,
• country,
• control,
• details,
• fare,
• programmer,
• stone,
• meaning,
• substance,
• seed,
• juice,
• cofactor,
• lubricant,
• sausage,
• plant,
• alloy,
• gas,
• veg,
• soil,
• food,