English Sentence
It is too much for me. I need to slow down.
Wiktionary has hidastaa as a transitive verb. The translation was not made by a native speaker.
1 Like
Yes, it should be hidastua, right?
The profile page of the translator confirms that he’s not native.
hidastua sounds better, but then I’m not a native either 
There is ellipsis at work here. Minun täytyy hidastaa ((vauhtia/tahtia)).
Minun täytyy hidastaa ‘I need to slow down’
Minun täytyy hidastua ‘I need to become slower’ (in a very concrete way)
But actually the first one would also work with the second translation in some cases. Hidastua sounds kind of weird but it’s not ungrammatical.
3 Likes
More input from native speakers (confirming this):
The latter means “I must be slowed down by some external force.”
It takes agency away from me, sounds a bit weird.
Or maybe “Some external factor must make me a permanently slower person.”
i must slow down [implied object]
[implied subject, not me] must slow me down
1 Like