Modifiers matching alkaloid:

• poisonous,
• potent,
• addictive,
• psychoactive,
• bitter,
• soluble,
• stimulating,
• toxic,
• anticholinergic,
• simple,
• active,
• hydrophobic,
• harmful,
• basic,
• natural,
• important,

Simple categories matching stimulating:

• liquid,
• test,
• drink,
• material,
• activity,
• herb,
• ingredient,
• stimulus,
• medicine,
• medication,
• infection,
• substance,
• beverage,
• object,
• condition,
• food,
• ray,
• drug,
• thing,
• agent,
• toy,
• sport,
• light,
• game,
• endeavor,
• taste,
• event,
• experience,
• recreation,
• metal,
• oil,
• entertainment,
• tea,
• item,
• plant,
• molecule,
• topic,
• cofactor,
• appliance,
• fluid,
• device,
• hormone,
• neurotransmitter,
• facility,
• protein,
• medium,
• discipline,
• aliment,
• compound,
• alkaloid,
• spice,
• equipment,
• surroundings,