This is the 304th most frequent Icelandic word.
láta
To let, allow, cause, or put.
In this sentence, 'láta' conveys the meaning of 'let or allow'.
Hann lætur ekki trufla sig af hávaðanum.
He does not let the noise disturb him.
Here, 'láta' is employed in an imperative form meaning 'to inform or notify'.
Láttu mig vita ef þú þarft hjálp.
Let me know if you need help.
Here, 'láta' is used in the sense of 'have something done or arranged'.