Modifiers matching marsupial:

• carnivorous,
• native,
• familiar,
• larger,
• small,
• herbivorous,
• australian,
• arboreal,
• subterranean,
• smaller,
• large,
• sized,
• amazing,
• terrestrial,
• nocturnal,
• newborn,
• size,
• threatened,
• world,

Simple categories matching subterranean:

• marsupial,
• location,
• structure,
• creature,