For travel:
* Journey: More formal and suggests a longer distance.
* Voyage: Used for travel by sea or air.
* Expedition: Implies a planned journey with a specific purpose.
* Excursion: A short trip, usually for pleasure.
* Sojourn: A temporary stay in a place.
* Tour: A planned journey with sightseeing.
* Vacation: A period of time spent away from work for leisure.
* Holiday: Similar to vacation, but often with a focus on a particular event or celebration.
For a stumble:
* Stumble: A sudden, unintentional loss of balance.
* Fall: A sudden descent to the ground.
* Slip: A sudden movement on a slippery surface.
* Tumble: A rolling or falling motion.
For a mistake:
* Error: A mistake or blunder.
* Slip-up: A minor mistake.
* Faux pas: A social blunder.
For a hallucinatory experience:
* Hallucination: A sensory experience that seems real but is not.
* Vision: A mental image or hallucination.
* Trip: (in this context, it refers to a drug-induced altered state of consciousness)
Please provide more context about how you're using "trip" so I can give you a more accurate suggestion.