Question

할 일이 없으면 우리나 보러 와 In situations when a desired or the most appropriate option is not available, -(이)나 is used to mark the second-best choice. In such usage, -(이)나 takes on the meaning similar to 'or something' in English.The most typical use cases include situations when the speaker recommends or proposes doing something that is considered to be the second-best option in given circumstances. Structures with -(이)나 in its 'or something' usage sound natural when followed by expressions of one's intention or will. Verbs in the past tense cannot be used after -(이)나.When used with nouns describing time, the -에나 form must be used (without omitting -에). Both -에나 or -(이)나 can be used with nouns describing a place. The -기나 form can follow verb stems.

Accepted Answer

Come and see us, if you're at a loose end

Front	할 일이 없으면 우리나 보러 와
Back	Come and see us, if you're at a loose end
Notes	In situations when a desired or the most appropriate option is not available, -(이)나 is used to mark the second-best choice. In such usage, -(이)나 takes on the meaning similar to 'or something' in English. The most typical use cases include situations when the speaker recommends or proposes doing something that is considered to be the second-best option in given circumstances. Structures with -(이)나 in its 'or something' usage sound natural when followed by expressions of one's intention or will. Verbs in the past tense cannot be used after -(이)나. When used with nouns describing time, the -에나 form must be used (without omitting -에). Both -에나 or -(이)나 can be used with nouns describing a place. The -기나 form can follow verb stems.

이)나 Situations Option Second Best Nouns Describing 에나 Form