Simple categories matching bitter:

• assassin,
• beverage,
• villain,
• person,
• veggie,
• wizard,
• sister,
• composer,
• constituent,
• writer,
• liquid,
• spice,
• lettuce,
• thug,
• tyrant,
• salad,
• child,
• material,
• criminal,
• pianist,
• terrorist,
• warrior,
• substance,
• humorist,
• flavour,
• demon,
• thing,
• flavor,
• bodybuilder,
• chicory,
• dictator,
• herb,
• fool,
• psychopath,
• musician,
• poet,
• compound,
• citrus,
• leaf,
• stout,
• gladiator,
• agent,
• son,
• ingredient,
• athlete,
• general,
• husband,
• drug,
• feed,
• beer,
• bully,
• traitor,
• green,
• vegetable,
• alkaloid,
• god,
• drink,
• magician,
• stimulant,
• food,

Members with property bitter:

• pumpkin,
• Lord_Voldemort,
• inert_compound,
• endive,
• Bane,
• Darth_Vader,
• Loki_Laufeyson,
• Fredo_Corleone,
• Ludwig_Van_Beethoven,
• rosemary,
• fennel,
• undigested_discord,
• strychnine,
• intern,
• aloe,
• arugula,
• chloroquine,
• citrus,
• Erik_"Magneto"_Lehnsherr,
• green_vegetable,
• worm,
• Maximus_Decimus_Meridius,
• villain,
• watercress,
• Antonio_Salieri,
• magician,
• Dorothy_Parker,
• Dante_Alighieri,
• Oscar_Wilde,
• psychopath,
• mistress,
• black_coffee,
• beer,
• wine,
• centaury,
• cinnamon,
• pianist,
• oregano,
• spinster,
• eggplant,
• god,
• fool,
• tears,
• curly_endive,
• certain_vegetable,
• swelling,
• Gore_Vidal,
• hyssop,
• broccoli,
• barberry,
• tomato,
• Wilson_"Kingpin"_Fisk,
• John_Constantine,
• gentian,
• assassin,
• General_Zod,
• potato,
• hop_beer,
• turmeric,
• radish,
• bodybuilder,
• sister,
• arctium-lappa_burdock,
• general,
• guinness,
• onion_broccoli,
• onion,
• vinegar,
• escarole,
• tansy,
• husband,
• Matt_Groening,
• lemon,
• bitter_lettuce,
• herb,
• Walter_White,
• southernwood,
• green,
• alfalfa,
• dandelion,
• Severus_Snape,
• Svengali,
• tea,
• mushroom,
• green_radicchio,
• leafy_green,
• motherwort,
• wild_chicory,
• Grigori_Rasputin,
• roman_gladiator,
• Lex_Luthor,
• Mr._Edward_Hyde,
• chard,
• sage,
• alcohol,
• rhubarb,
• catnip,
• chinese_wormwood,
• metronidazole,
• necromancer,
• burdock,
• stout,
• nicotine,
• terrorist,
• quinine_hydrochloride,
• humorist,
• rye,
• criminal,
• carrot,
• mixed_salad,
• mugwort,
• radicchio,
• radicchio_lettuce,
• spinach,
• garlic,
• gladiator,
• beet,
• Sauron,
• blue,
• Selma_Bouvier,
• romaine,
• anise,
• prepared_horseradish,
• ranitidine,
• orange,
• Michael_Myers,
• Lucifer,
• belgium_endive,
• Stanley_Kowalski,
• seawater,
• grapefruit,
• bitter_melon,
• Dalton_Trumbo,
• quassia,
• lettuce,
• Tony_Montana,
• Snake_Plissken,
• roman_general,
• horseradish,
• poet,
• horehound,
• unsweetened_chocolate,
• raw_broccoli,
• kale,
• endive_lettuce,
• swedish_bitters,
• frost_giant,
• tannic_acid,
• agrimony,
• coffee,
• Hans_Gruber,
• sadness,
• Lee_Harvey_Oswald,
• green_kale,
• cress,
• slave,
• chamomile,
• Agent_Smith,
• sauerkraut,
• olive,
• celery,
• bock,
• wild_spinach,
• wormwood,
• papaverine_hydrochloride,
• vegetable_tonic,
• trappist_ale,
• thyme,
• pennyroyal,
• caffeine,
• Travis_Bickle,
• cardoon,
• Noël_Coward,
• mate,
• chicory,
• cabbage,
• cardamom,
• wizard,
• greater_celandine,
• bitters,
• composer,
• goldenseal,
• seed,
• quinine_sulfate,
• alkaloid,
• ginger_oil,
• apricot,
• coriander,
• witloof,
• skullcap,
• fenugreek,
• old_man,
• Victor_Meldrew,
• pang,
• rue,
• cinchona,
• beverage,
• senna,
• John_Lennon,
• Tom_Ripley,
• brown_ale,
• porter,
• asparagus,
• cauliflower,
• John_Wilkes_Booth,
• cucumber,
• Monica_Lewinsky,
• cayenne,
• belgian_endive,
• bitter_green,
• parsley,
• certain_sugar,
• Richard_B._Riddick,
• basil,
• neem,
• mint,
• musician,
• curmudgeon,
• pea,
• Jabba_the_Hutt,
• quinine,
• Jason_Voorhees,
• morphine,
• chocolate,
• writer,
• artichoke,
• beet_kvass,
• complainer,
• angelica,
• norse_god,