Sentence adverbs (-ligen)

Sentence adverbs modify the meaning of an entire sentence, often expressing a speaker's attitude or degree of certainty. In Swedish, many of these adverbs are formed by attaching the suffix -ligen to a base adjective, functioning much like the English suffix "-ly".

Adjective vs. Adverb

Adjectives describe nouns, while adverbs modify verbs, adjectives, or whole sentences. Notice how the adjective trolig (likely) transforms into the sentence adverb troligen (probably):

The story is plausible, but it is probably a myth.
Historien är trolig, men den är troligen en myt.

Let's look at another pair: the adjective uppenbar (obvious) and the adverb uppenbarligen (obviously). While the adjective changes form depending on the noun (taking a -t ending for ett words), the -ligen adverb remains fixed.

The error in the article was completely obvious.
Felet i artikeln var helt uppenbart.
The journalist obviously lied about the event.
Journalisten ljög uppenbarligen om händelsen.

Proving and Emphasizing Facts

When fact-checking, you frequently need words that assert truth. The adjective bevislig (provable) becomes the adverb bevisligen (demonstrably):

The so-called expert was demonstrably wrong.
Den så kallade experten hade bevisligen fel.

The adverb sannerligen (indeed) emphasizes that something is undeniably true:

That old myth is indeed interesting.
Den där gamla myten är sannerligen intressant.

Possibility and Impossibility

You can also use -ligen adverbs to discuss what might or could never be true. Möjligen means "possibly," while omöjligen means "impossibly" or "couldn't possibly":

The myth possibly emerged in the city where he lived.
Myten växte möjligen fram i staden där han bodde.
I can't possibly refrain from laughing at the joke.
Jag kan omöjligen låta bli att skratta åt skämtet.

Drawing Conclusions

Finally, the -ligen suffix can mark the end of a sequence or investigation. The adjective slutlig (final) becomes the adverb slutligen (finally, lastly, or in conclusion):

Finally, we could prove that the rumor was false.
Slutligen kunde vi bevisa att ryktet var falskt.
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