This is the 8160th most frequent Swedish word.
allvarligare
"Allvarligare" means "more serious" in English.
In this sentence, 'allvarligare' is used to describe a progressive seriousness, intensified by the use of 'allt'.
Han verkar ta sin roll allt allvarligare.
He seems to take his role more and more seriously.
'Allvarligare' is used in a comparative form to prioritize one issue over another based on its seriousness.
Vi måste diskutera det allvarligare problemet först.
We must discuss the more serious problem first.
Here, 'allvarligare' is used as a comparative adjective, indicating that the situation has increased in seriousness compared to before.