Indigestion rhymes with:
digestion, digestion, congestion, digestion, ingestion, suggestion, congestion, digestion, ingestion, question, suggestion
Indigestion sounds like:
indexation, indication, induction, intestine, intoxication
digestion, digestion, congestion, digestion, ingestion, suggestion, congestion, digestion, ingestion, question, suggestion
indexation, indication, induction, intestine, intoxication