Synonyms of indigestible

1 Syllable
green, raw, hard, tough, rough
2 Syllables
toxic, rotten, tougher, putrid, moldy, toughest
3 Syllables
tasteless, unripe, disagreeing, poisonous, unhealthy
4 Syllables
inedible, malodorous, uneatable, undercooked
5 Syllables
unpalatable, unpleasant-tasting