This is the 147th most frequent Icelandic word.
meiri
"Meiri" means "more" or "greater" in English.
Here, 'meiri' is used to express the comparative form to mean 'more' or 'additional' of something in quantity.
Ég vil meiri súpu.
I want more soup.
This usage of 'meiri' contributes to an idiomatic expression ('meiri háttar') which means 'great' or 'magnificent'.
Meiri háttar dagur var það í gær!
That was a great day yesterday!
In this example, 'meiri' once again denotes 'additional' or 'more,' relating to the amount of noise.