Normally, Finnish uses the relative pronoun joka to refer back to a specific noun. However, mikä replaces joka in two key situations.
1. After Superlatives
If the noun being referred to is modified by a superlative adjective (e.g., "the biggest," "the best"), use mikä. It takes case endings to match its grammatical role in the relative clause, such as the object form minkä.
| That was the greatest insight that I have ever received. | Se oli suurin oivallus, minkä olen koskaan saanut. |
| This is probably the most unpredictable ordeal that we will experience. | Tämä lienee arvaamattomin koettelemus, minkä koemme. |
| That is probably the most meaningful decision that I made. | Tuo lienee merkityksellisin päätös, minkä tein. |
| Maturity is the best thing that an ordeal can teach. | Kypsyys on paras asia, minkä koettelemus voi opettaa. |
2. Referring to an Entire Clause
Use mikä when "which" refers to the entire preceding thought or situation rather than a single noun.
| A big mistake came to be made, which I realized later. | Tuli tehtyä suuri virhe, minkä oivalsin myöhemmin. |
If the pronoun is the subject of the relative clause, it remains in the nominative form mikä.
| The change of direction required daring, which was not easy. | Suunnanmuutos vaati uskallusta, mikä ei ollut helppoa. |
| Life is unpredictable, which requires self-confidence from us. | Elämä on arvaamatonta, mikä vaatii meiltä itseluottamusta. |
Your questions are stored by us to improve Elon.io