mer/mest

'Mer' and 'mest' are essential for making comparisons in Swedish, especially when the standard adjective endings don't apply. They correspond to 'more' and 'most' in English.

1. With Adjectives
While most short adjectives use the -are/-ast endings, many longer or more complex adjectives use 'mer' and 'mest'; other adjectives permit either pattern. This is especially true for adjectives with multiple syllables or those ending in '-isk', '-ande', or '-ende'.

• Base: intressant (interesting)
• Comparative: mer intressant (more interesting)
• Superlative: mest intressant (most interesting)

The adjective does not take a comparative -are ending here, but ordinary agreement still applies: en mer intressant bok, ett mer intressant hus, mer intressanta böcker, and den mest fantastiska filmen.

2. With Uncountable Nouns
'Mer' and 'mest' are used to compare amounts of things that you can't count individually, like liquids, abstract concepts, or materials.

• Jag behöver mer tid. (I need more time.)
• Hon har mest erfarenhet. (She has the most experience.)

For a number of individual countable items, fler and flest are clear standard choices. Mer/mest also occur with plural nouns viewed collectively, especially in speech; this is not an absolute grammar ban.

3. Modifying Verbs
You can also use 'mer' and 'mest' to describe the extent of an action.

• Du måste sova mer. (You must sleep more.)
• Vem jobbar mest? (Who works the most?)

Comparison And Agreement Are Different
Mer intressant happens to look the same with a singular en-word or ett-word because intressant already ends in -t. This is not evidence that agreement disappears: ett mer fantastiskt resultat has neuter -t, and mer intressanta böcker has plural -a.

For individual friends, Jag har fler vänner i Stockholm is a useful neutral written model. Mer vänner can occur in collective or conversational usage; it should not be presented as universally impossible.