
holprig
bumpy
Describes a surface that is uneven and full of small obstacles, so that you can only move over it jerkily.
Die Fahrt über die holprige Landstraße war sehr unangenehm.
The drive along the bumpy country road was very unpleasant.
bumpy / halting
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bumpy
Describes a surface that is uneven and full of small obstacles, so that you can only move over it jerkily.
Die Fahrt über die holprige Landstraße war sehr unangenehm.
The drive along the bumpy country road was very unpleasant.

halting
Used figuratively for processes, language, or beginnings that do not run smoothly, but instead proceed with difficulties and interruptions.
Sein Deutsch war anfangs noch etwas holprig, wurde aber schnell besser.
His German was still a bit halting at first, but it quickly got better.
The adjective 'holprig' (bumpy/halting) is closely related to the verb 'holpern' (to bump along), which means 'stolpern' (to stumble) or 'sich ruckartig bewegen' (to move jerkily). This connection helps you understand the core idea of something irregular and not flowing smoothly.
Der alte Wagen holperte über das Kopfsteinpflaster.
The old car bumped along over the cobblestones.
'Holprig' (halting) is very often used figuratively for things that do not run smoothly. The noun it describes makes the context clear.
Nach einem holprigen Start fand die Mannschaft besser ins Spiel.
After a halting start, the team found its way into the game better.
In the figurative meaning, 'holprig' (halting) is frequently combined with processes and beginnings: 'ein holpriger Start' (a bumpy/halting start), 'ein holpriger Beginn' (a bumpy/halting beginning), 'eine holprige Verhandlung' (a difficult negotiation), or 'eine holprige Formulierung' (an awkward formulation).
Die Koalitionsverhandlungen hatten einen holprigen Beginn.
The coalition negotiations had a halting beginning.
'Holprig' (bumpily/haltingly) can also be used as an adverb to describe how an action is carried out. It then remains unchanged after the verb.
Der Redner las seinen Text sehr holprig vor.
The speaker read his text aloud very haltingly.
rough
Rau and holprig can both describe a road that is not smooth. Rau emphasizes the coarse texture of the surface, while holprig highlights the many uneven patches that make you move along with a jolt. Choose rau for how the surface feels, and holprig for the difficult ride or movement.

Wegen der vielen kleinen Unebenheiten war die Fahrt auf dem Weg holprig.
Because of the many small bumps, the ride along the path was bumpy.
Der neue Straßenbelag ist noch rau und fühlt sich unter den Reifen grob an.
The new road surface is still rough and feels coarse beneath the tires.