siis and eli are Finnish's two workhorse reformulation markers — the words you reach for when you rephrase, restate, or draw a conclusion. English blurs both jobs under "so", but Finnish splits them, and the split is worth learning cleanly:
- eli — renames or restates: "or, that is, i.e., in other words". It equates A with B: X, eli Y = "X, in other words Y".
- siis — concludes or self-corrects: "so, therefore, I mean, then". It draws an inference from what came before, or repairs what you just said.
Both are neutral in register and appear happily in speech and writing — eli is in fact the standard Finnish way to write "i.e." Neither is a slangy filler, which is exactly why sprinkling them around like an English so misfires.
eli: "in other words / i.e."
eli introduces a paraphrase — a second name or a plainer restatement of the same thing. In print it is the everyday equivalent of "i.e." or the equals-sign between a term and its gloss.
Hän on lingvisti, eli kielitieteilijä.
She's a linguist, i.e. a language scientist.
Tavataan keskiviikkona, eli ylihuomenna.
Let's meet on Wednesday, that is, the day after tomorrow.
Se maksaa satasen, eli aika paljon.
It costs a hundred, which is to say quite a lot.
Because eli equates the two halves, it also works as a wrapping-up "so" that restates the upshot of a conversation in plainer terms:
Eli me nähdään lauantaina kello kuusi.
So — to sum up — we'll see each other on Saturday at six.
Eli tarkoitat, että et pääse tulemaan?
So you mean you can't make it? (paraphrasing back what you understood)
siis: "so, therefore, then"
siis points the other direction: it draws a conclusion or asks the listener to confirm one. It threads a "therefore" through the conversation — from premises already on the table to the inference you are now making.
Sinä olet siis valmis lähtemään?
So you're ready to go, then?
Kauppa on kiinni, siis mennään huomenna.
The shop's closed, so we'll go tomorrow.
Siis se ei tulekaan ollenkaan?
So it's not coming at all, then? (drawing the conclusion, seeking confirmation)
Placed at the front of a question, siis turns a bare question into "so, given all that, …?" — it explicitly hangs the question on what was just said.
Tuletko siis mukaan vai et?
So are you coming along or not?
siis for self-correction: "I mean…"
The second job of siis is repair. When you misspeak and need to fix it mid-flow, siis introduces the correction — English "I mean…" or "or rather…".
Se maksoi kaksikymmentä, siis kaksikymmentäviisi euroa.
It cost twenty — I mean twenty-five euros.
Nähdään maanantaina, siis ei kun tiistaina.
See you Monday — no wait, I mean Tuesday. (siis ei kun = 'no, I mean')
Siis mitä?! — the exasperated one
Front a question with a stressed siis and add rising, sharp intonation, and you get genuine irritation or disbelief — "wait, what?! / so what are you telling me?!" It is a fixed reaction of exasperation, and the tone is unmistakable.
Siis mitä?! Etkö sä muistanut ottaa niitä mukaan?
Wait, what?! You didn't remember to bring them?! (sä = sinä)
Siis miten niin peruttu? Mehän sovittiin tästä!
What do you mean, cancelled?! We agreed on this! (mehän = me + shared-knowledge -hän)
siis vs eli at a glance
| eli | siis | |
|---|---|---|
| Core job | renames / restates (A = B) | concludes / infers, or self-corrects |
| English | "i.e., that is, in other words, or" | "so, therefore, then, I mean" |
| Direction | sideways (equate two names) | forward (draw a consequence) |
| Written "i.e."? | yes — the standard word | no |
| Repair use? | no | yes ("siis", "siis ei kun") |
They can both wrap up a conversation ("so, …"), which is where they overlap — but eli restates the upshot in other words, while siis draws it as a logical consequence. When in doubt: if you could substitute "in other words", use eli; if you could substitute "therefore", use siis.
Common Mistakes
❌ Kahvia eli teetä? (meaning to offer a choice)
Wrong — this reads 'coffee, in other words tea', equating the two. eli restates, it doesn't offer alternatives.
✅ Kahvia vai teetä?
Coffee or tea? (a genuine either/or takes vai; a listing 'or' takes tai)
❌ Helsinki e li Suomen pääkaupunki.
eli is one word — never split it.
✅ Helsinki, eli Suomen pääkaupunki.
Helsinki, i.e. the capital of Finland.
❌ Siis, siis, mä olin siis kaupassa ja siis…
Scattering siis as a meaningless English-style 'so'/'like' — it should carry inferential or repair force, not fill silence.
✅ No, mä olin kaupassa ja tota…
Well, I was at the shop and, um… (for pure hesitation, use no / tota — not siis)
❌ Using eli to introduce a real alternative: 'Mennäänkö elokuviin eli teatteriin?'
This says the cinema and the theatre are the same place. A choice needs vai.
✅ Mennäänkö elokuviin vai teatteriin?
Shall we go to the cinema or the theatre?
The biggest habit to unlearn is dumping every English "so" onto whichever word comes to mind. English "so" is doing at least three jobs — restating, concluding, and just filling air — and Finnish assigns them to eli (restate), siis (conclude/repair), and no / niin / tota (fill air). Pick by the job, not by the English word. For the conjunction että that often follows both (as in eli tarkoitat, että…), see että.
Key Takeaways
- eli = restate / rename: "i.e., in other words, that is" — the standard written "i.e.", one word, and not the choosing "or" (tai / vai).
- siis = conclude or self-correct: "so, therefore, then" and "I mean".
- A sharp sentence-initial Siis mitä?! conveys irritation or disbelief.
- Overlap is only in the summarizing "so": eli restates the upshot, siis infers it.
- Both are neutral register — at home in speech and writing alike; neither is a mere filler.
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- että: The 'that' ClauseA2 — että introduces complement clauses after verbs of thinking and saying (Luulen, että hän tulee), builds niin … että results, and always takes a preceding comma.
- niin: 'so', Agreement, and ContinuationB1 — The multifunction particle niin does agreement ('yeah, that's so'), phone backchanneling, resumptive 'so', the prompting Niin?, and the memory-jog idiom Ai niin! — far more than a plain 'so'.
- no niin: 'okay then'B1 — no niin is Finnish's all-purpose boundary marker — it opens a task ('right, let's…'), refocuses a group, scolds ('now then!'), and signals closure ('there we go'). Intonation alone stretches it from 'let's begin' to 'I told you so'.
- itse asiassa, oikeastaanC1 — itse asiassa ('as a matter of fact') introduces a correction or a surprising truth; oikeastaan ('actually, rather') softens a mild contradiction into a face-saving hedge. Both let Finnish disagree politely — and both are easy to over-calque from English 'actually'.
- Discourse Markers: An OverviewB1 — A map of the little Finnish words — no, niin, joo, siis, tota, niinku, kuitenkin — that organize conversation, sorted by function, with each marker deferred to its own page.