tulla + Translative: tulla iloiseksi

English has a dedicated verb for change of state — become — plus a scattering of near-synonyms (get sick, turn cold, go mad). Finnish has none of these as a standalone verb. Instead it repurposes tulla, its ordinary verb for "come", and pairs it with a complement in the translative case (-ksi), the case whose whole job is marking the endpoint of a change. Tulla iloiseksi is, structurally, "come into happy". Once you learn this one pattern — tulla + -ksi — you can express "become / get / turn / go" for almost any state, without hunting for a matching English verb.

The construction: tulla + -ksi

Put the resulting state in the translative and let tulla carry the change:

Iloiseksi (happy) and sairaaksi (sick) are the destinations of the change — where the subject ends up. The subject itself stays in the nominative (minä → tulin, sinä → tulet); only the result-word wears -ksi. This is exactly the translative's core meaning, laid out on the translative -ksi page: it marks what something turns into.

Change vs state: iloiseksi vs iloinen

Here is the distinction English blurs and Finnish keeps sharp. To say you are in a state, use olla + a plain nominative adjective. To say you become that state, use tulla + the translative:

Olen iloinen is a photograph of the state; tulin iloiseksi is the moment of arriving in it. The word is the same adjective, but "being" takes the nominative and "becoming" takes -ksi. Mixing them — olla with a translative, or tulla with a nominative — is the classic error, and it is worth drilling until it feels automatic.

Note kuuluisaksi keeps its full vowel length (kuu-lui-saksi) — the translative adds -ksi without touching the stem's long vowels.

Becoming a someone: professions and roles

For "become a doctor / teacher", Finnish speakers most often reach for a slightly different frame — the elative subject (-sta/-stä, "out of") plus a nominative predicate, literally "out of me comes a doctor":

The translative still surfaces on the role, though, whenever the verb is one of training or taking up a profession — opiskella opettajaksi (study to become a teacher), valmistua lääkäriksi (qualify as a doctor), ryhtyä yrittäjäksi (become an entrepreneur):

The weather idiom: tuli pimeä

One fixed corner resists the translative. For ambient "it got dark / cold", Finnish uses a subjectless tulla with a bare nominative, as if darkness itself arrived:

Here pimeä and kylmä are nominative, not pimeäksi / kylmäksi — this is a set weather idiom with no subject to change. As soon as there is a subject undergoing the change, the translative returns (Kahvi ehti tulla kylmäksi "the coffee had time to go cold"). For temperature changes with a subject, everyday Finnish also leans on muuttua + translative (Sää muuttui kylmäksi), covered on the essive vs translative page.

tulla also means "come" (and the future)

Because tulla is doing double duty, the same word can mean "come" and can hint at the future. The translative complement is what tells you "become" is meant — no -ksi, and it is plain motion or futurity:

In the first, tulla is literal "come" (no translative). In the second, the elative susta (colloquial for sinusta) plus the "become" reading make it change-of-state. Context and the case marking, not the verb, carry the meaning.

Common Mistakes

Key Takeaways

• Finnish "become" is tulla + translative -ksi: tulla iloiseksi, sairaaksi, kuuluisaksi.
• State vs change: olla iloinen (be, nominative) versus tulla iloiseksi (become, translative).
• For professions, prefer the elative frame minusta tulee lääkäri; the translative appears with opiskella / valmistua / ryhtyä + -ksi.
• Ambient weather is a fixed nominative idiom: tuli pimeä, tuli kylmä — no -ksi.
• The translative complement is what disambiguates tulla "become" from tulla "come".