undigestible

/ˌʌn.dɪˈdʒɛs.tə.bəl/
adjective
  1. Difficult or impossible for the body to break down and absorb as food.
    • The tough, fibrous skin of the fruit is nearly undigestible for humans.
    • Some seeds are designed to be undigestible so they pass through animals and grow elsewhere.
    • He chewed the meat for a long time, but it remained tough and undigestible.
  2. Difficult or impossible to understand or accept; not mentally manageable.
    • His long, rambling speech was undigestible for most of the audience.
    • The textbook was full of undigestible jargon that confused the students.
    • The shocking news was undigestible, and she needed time to process it.
Antonyms
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