Modifiers matching opiate:

• analgesic,
• medical,
• common,
• addictive,
• prescribed,
• external,
• natural,
• medicinal,
• illegal,
• pharmaceutical,
• lipophilic,
• synthetic,
• individual,
• heavy,
• strong,
• oral,
• potent,
• pure,
• illicit,
• conventional,
• semisynthetic,
• powerful,
• narcotic,
• exogenous,
• iv,
• traditional,
• hydrophilic,

Simple categories matching semisynthetic:

• drug,
• penicillin,
• opiate,