This is the 616th most frequent Icelandic word.
einstaka
The Icelandic word "einstaka" means "occasional" or "rare."
Here, 'einstaka' is used adverbially in the phrase 'einstaka sinnum', meaning 'occasionally' or 'seldomly'.
Ég lendi einstaka sinnum í skemmtilegum aðstæðum.
I occasionally find myself in fun situations.
Here, 'einstaka' is used adjectivally to describe 'fugla' (birds), hinting that they were unique or unusual.
Við sáum einstaka fugla í skóginum.
We saw a few unique birds in the forest.
In this sentence, 'einstaka' modifies 'mistök' (mistakes), implying that they are rare occurrences.