This is the 11017th most frequent Swedish word.
lös
"Loose" or "free."
Here, 'lös' describes the fit of the sweater as being too large or not snug.
Tröjan är lite lös på mig.
The sweater is a bit loose on me.
In this sentence, 'lösning' (a noun derived from 'lös') means 'solution', referring to resolving an issue.
Du måste hitta en lösning till problemet.
You must find a solution to the problem.
Here, 'lös' means 'free' or 'not restrained', describing the state of being unbound.