tuntea ('to know / feel') | Finnish Grammar

Tuntea means "to know a person" and "to feel (a sensation)" — never "to know a fact," which is tietää. It is a Type 1 verb, so it inflects like puhua, but two things make it a page of its own: the stem gradates nt ↔ nn (strong tunte-, weak tunne-), and its past tense is irregular — tunsin, not the expected *tuntin, because the cluster nt undergoes assibilation before the past -i-.

Principal parts

Infinitive	Present 1sg	Present 3sg	Past 1sg	Past participle
tuntea	tunnen	tuntee	tunsin	tuntenut

The weak grade tunne- carries the closed-syllable endings (1sg, 2sg, 1pl, 2pl); the strong grade tunte- appears in the open-syllable 3sg and 3pl, and in the infinitive. Once you have those two stems, everything except the past is regular.

Present and past

Person	Present	Past (imperfect)
minä	tunnen	tunsin
sinä	tunnet	tunsit
hän	tuntee	tunsi
me	tunnemme	tunsimme
te	tunnette	tunsitte
he	tuntevat	tunsivat
negative	en tunne	en tuntenut

💡

The past is where learners stumble. The cluster nt does not just gradate — it assibilates: tunt- + i → tuns-. So the whole past column has -ns- and no gradation at all (tunsin, tunsi, tunsivat). This is the same pattern as tietää → tiesi, lentää → lensi, löytää → löysi.

Tunnetko sinä hänet? Näin teidät yhdessä eilen torilla.

Do you know him/her? I saw you two together at the market yesterday.

Tunsin heti, että jokin oli pahasti vialla.

I sensed right away that something was badly wrong.

Me tunnemme toisemme jo lukioajoilta.

We've known each other since our high-school days.

Perfect, conditional, imperative

Compound tenses use olla + the past participle tuntenut (plural tunteneet). The conditional drops the stem -e- before -isi- (tunt- + isi → tuntisin), keeping the strong grade. The everyday imperative is the bare weak stem tunne!, though telling someone to "know a person" is rare — the imperative is far more natural in the "feel" sense.

Person	Perfect	Conditional	Imperative
minä	olen tuntenut	tuntisin	—
sinä	olet tuntenut	tuntisit	tunne!
hän	on tuntenut	tuntisi	tuntekoon (formal)
me	olemme tunteneet	tuntisimme	—
te	olette tunteneet	tuntisitte	tuntekaa
he	ovat tunteneet	tuntisivat	—

The potential tuntenee ("presumably feels/knows") exists but is literary. The perfect conditional is olisin tuntenut ("I would have known/felt").

Olen tuntenut hänet jo kymmenen vuotta, mutta en tiedä hänen syntymäpäiväänsä.

I've known him/her for ten years, but I don't know his/her birthday.

Tuntisin oloni turvallisemmaksi, jos ovi olisi lukossa.

I'd feel safer if the door were locked.

Passive

The passive builds on the weak grade tunne- → tunnet-. Its past participle tunnettu also lives a second life as the adjective "well-known, famous."

Tense	Affirmative	Negative
Present	tunnetaan	ei tunneta
Past	tunnettiin	ei tunnettu
Perfect	on tunnettu	ei ole tunnettu

Tämä pieni kahvila tunnetaan parhaista korvapuusteistaan.

This little café is known for its best cinnamon buns.

Uses and rection

Knowing a person. Tuntea takes an object — total tunnen hänet ("I know him," acquaintance as a whole fact) or partitive tunnen häntä ("I'm getting to know him," ongoing / limited). With negation and degree words the partitive is the rule: en tunne häntä hyvin.

Feeling a sensation. Here tuntea is a transitive experiencer verb: tunnen kipua ("I feel pain," partitive), tunnen kylmää, tunnen pistoksen kyljessä. To say you feel some way, use tuntea itsensä / olonsa + translative: tunnen itseni väsyneeksi / tunnen oloni väsyneeksi ("I feel tired").

💡

Do not confuse transitive tuntea ("to feel something") with intransitive tuntua ("to feel like / seem"). Tunnen kylmää = "I feel cold (I sense cold)"; ulkona tuntuu kylmältä = "it feels cold outside." Tuntua takes an ablative complement (hyvältä, oudolta) and no personal experiencer.

Tunnen itseni ihan uudeksi ihmiseksi loman jälkeen.

I feel like a completely new person after the holiday.

Tunnetteko te jo toisenne, vai esittelenkö teidät?

Do you two already know each other, or shall I introduce you?

Common Mistakes

❌ Minä tuntin hänet jo silloin.

Incorrect — the past assibilates: tunsin, never *tuntin.

✅ Minä tunsin hänet jo silloin.

I already knew him/her back then.

❌ Tunnen, että Helsinki on Suomen pääkaupunki.

Incorrect — a fact takes tietää, not tuntea.

✅ Tiedän, että Helsinki on Suomen pääkaupunki.

I know that Helsinki is the capital of Finland.

❌ Hän tunnen suomea hyvin.

Incorrect — 3sg is the strong grade tuntee; and 'be good at a language' is osata, not tuntea.

✅ Hän osaa suomea hyvin.

He/she knows Finnish well (is skilled at it).

❌ Minä tuntee kipua polvessa.

Incorrect — 1sg is the weak grade tunnen; tuntee is 3sg only.

✅ Minä tunnen kipua polvessa.

I feel pain in my knee.

Key Takeaways

Two stems: weak tunne- (tunnen, tunnet, tunnemme, tunnette), strong tunte- (tuntee, tuntevat, infinitive, participle tuntenut).
Irregular past: nt assibilates to ns before -i- → tunsin, tunsi, tunsivat — no gradation in the past at all.
Three uses: tuntea hänet/häntä (know a person), tuntea kipua (feel a sensation, partitive), tuntea itsensä/olonsa
- translative (feel some way).
Reach for tietää for facts and osata for skills — tuntea covers people and feelings.

Now practice Finnish

Reading grammar gets you part of the way. The exercises are where it sticks — free, no signup needed.

Start learning Finnish→