Modifiers matching stimulant:

• synthetic,
• serious,
• regular,
• potent,
• powerful,
• cardiac,
• herbal,
• illegal,
• psychoactive,
• popular,
• unnatural,
• harder,
• strong,
• dangerous,
• active,
• simple,
• destructive,
• soft,
• legal,
• inert,
• cardiovascular,
• mild,
• chemical,
• harmful,
• pharmaceutical,
• immune,
• artificial,
• toxic,
• psychomotor,
• exogenous,
• medical,
• controversial,
• prescribed,
• addictive,
• sexual,
• harsh,
• illicit,
• nervous,
• unhealthy,
• recreational,
• sympathomimetic,
• physical,
• pharmacologic,
• ventilatory,
• pharmacological,
• manufactured,
• bitter,
• controlled,
• major,
• common,
• familiar,
• natural,
• biological,
• traditional,

Simple categories matching psychoactive:

• constituent,
• substance,
• drug,
• food,
• herb,
• peptide,
• effect,
• medication,
• amine,
• alkaloid,
• agent,
• pharmaceutical,
• property,
• chemical,
• plant,
• cactus,
• intoxicant,
• ligand,
• benzodiazepine,
• medicine,
• stimulant,
• compound,