This is the 12984th most frequent Swedish word.
sämst
Worst.
In this case, 'sämst' is used as a superlative adjective meaning 'the worst,' comparing the quality of the movie to others.
Filmen var sämst av alla vi såg.
The movie was the worst of all we watched.
Here, 'sämst' describes a personal feeling, indicating the most negative state one has been in.
Jag känner mig sämst idag.
I feel the worst today.
In this example, 'sämst' highlights a lack of skill in cooking, situating the person at the lowest end of proficiency compared to others.