This is the 774th most frequent Icelandic word.
slík
"Slík" in Icelandic means "such" or "like that."
The word 'slík' is used here as a determiner or an adjective to describe 'ferð' (journey), implying a journey of a specific, remarkable type.
Slík ferð var ótrúleg.
Such a journey was incredible.
In this sentence, 'slíka' modifies 'skemmtun' (entertainment) in its accusative singular feminine form, emphasizing uniqueness.
Ég hef aldrei séð slíka skemmtun áður.
I have never seen such entertainment before.
Here, 'slíkur' is utilized in masculine plural form to refer to 'óhöpp' (accidents), highlighting a general category or type of accidents.