Learn Icelandic: Kosningin er spennandi en stjórnmálamennirnir eru þreyttir. - The election is exciting, but the politicians are tired.

Words ending in -andi are present participles (like English words ending in "-ing"). When used as adjectives, they are indeclinable, meaning they never change their endings no matter the gender, number, or case of the noun.

Why do we use þreyttir instead of the dictionary form þreyttur?

Adjectives must agree with the noun they describe. Because stjórnmálamennirnir (the politicians) is masculine and plural, the adjective takes the masculine nominative plural ending -ir, making it þreyttir.

Stjórnmálamennirnir is in the nominative case. How would we change it to the genitive plural definite to say "of the politicians"?

To form the definite genitive plural, we add the suffix -anna. The genitive plural of menn (men) is manna. Adding -nna (since the word already ends in 'a') gives us the long but logical word stjórnmálamannanna.

If we wanted to talk about something belonging to multiple elections, how would we form the genitive plural definite of kosningin?