Finnish words are long, so Finnish abbreviates constantly. An email ends with a single letter. A shop sign says klo and nothing else. A second-hand ad reads HP 20e, YV and assumes you know.
None of this is in a textbook, and almost all of it is guessable once you've seen it once. Here it is once.
The Ones in Every Email
| Short | Full form | What it means |
|---|---|---|
esim. | esimerkiksi | for example |
jne. | ja niin edelleen | and so on |
mm. | muun muassa | among other things |
ym. | ynnä muuta | and other things |
yms. | ynnä muuta sellaista | and the like |
tms. | tai muuta sellaista | or something like that |
ts. | toisin sanoen | in other words |
ns. | niin sanottu | so-called |
ko. | kyseessä oleva | the one in question |
em. | edellä mainittu | mentioned above |
ks. | katso | see |
vrt. | vertaa | compare |
huom! | huomaa | note! |
The one with a dead word in it: ym. stands for ynnä muuta, and ynnä is an old word for "and" that survives almost nowhere else in modern Finnish. Finns use the abbreviation daily without ever using the word.
Watch the full stop: mm with no stop is millimetres — 2 mm paksuinen, "two millimetres thick." mm. with a stop is muun muassa — mm. kaksi, "two among others." Finnish unit abbreviations never take a period, and that one dot is the only thing telling the two apart.
The Practical Ones
| Short | Full form | What it means |
|---|---|---|
klo | kello | o'clock, at |
pvm | päivämäärä | date |
n. | noin | about, approximately |
nro | numero | number |
os. | osoite | address |
puh. | puhelin | phone number |
s-posti | sähköposti | email |
hlö | henkilö | person |
kpl | kappale | piece, item |
kk | kuukausi | month |
vrk | vuorokausi | 24 hours, a full day |
krs | kerros | floor, storey |
hetu | henkilötunnus | personal identity code |
The one you'll be asked for: hetu is your Finnish personal identity code, and every form, pharmacy counter and doctor's reception asks for it. It isn't a shortening of a phrase — it's the first syllables of henkilötunnus glued together, which is a very Finnish way of making an abbreviation.
klo is not optional: Finnish writes times as klo 18, and the word kello in full looks almost odd on a sign. Reading the times themselves is in telling the time, and the weekday pairs you'll see beside them — ma, ti, ke — come straight off the days of the week.
The Sign-Off, and the Trap in It
| Short | Full form | What it means |
|---|---|---|
t. | terveisin | regards (before a name) |
Terv. | terveisin | regards |
t. | tai | or (inside a sentence) |
Same letter, two jobs: at the end of a message, t. before a name is terveisin, "regards" — t. Mikko. Inside a sentence, t. can be tai, "or" — though that one is rare and lives mostly in compressed notes and ads, so terveisin is the right first guess. Position is the only clue. If you're writing rather than reading, Terv. is unambiguous.
Letters You'll Meet Everywhere
| Short | Full form | What it means |
|---|---|---|
some | sosiaalinen media | social media |
Kela | Kansaneläkelaitos | the social insurance institution |
alv, often written ALV | arvonlisävero | VAT |
oy | osakeyhtiö | limited company |
ry | rekisteröity yhdistys | registered association |
amk | ammattikorkeakoulu | university of applied sciences |
SPR | Suomen Punainen Risti | Finnish Red Cross |
HS | Helsingin Sanomat | Finland's largest newspaper |
YK | Yhdistyneet kansakunnat | the United Nations |
It looks English and isn't: some is sosiaalinen media, pronounced the Finnish way with two syllables — so-me. Finns say somessa ("on social media") and some-kanava ("social media channel"), and an English speaker reading it as the word "some" will get a sentence that falls apart. More of this vocabulary is in technology and internet words.
Prices carry alv: Finnish consumer prices must be shown including alv, so the number on the shelf is the number you pay — see money and banking words for the rest.
The Second-Hand Code
Finland buys and sells through Facebook groups called kirppis groups, and they run on a shorthand of their own. This is the set that defeats newcomers, because you won't find it in a dictionary — only in the groups themselves.
| Short | Full form | What it means |
|---|---|---|
HP | hintapyyntö | asking price |
YV | yksityisviesti | private message, DM |
YP | ylläpito, ylläpitäjä | the group admin |
AV | alustava varaus | provisional reservation |
And the words those codes sit among:
second-hand shop, flea market
kirppis
asking price
hintapyyntö
for sale
myynnissä
reserved
varattu
I'll buy it.
Ostan.
collection in person
nouto
postage
postikulut
queue (of buyers waiting)
jono
bumping a post back to the top
uppaus
Practice these words
kirppis
How a kirppis post works: the seller writes the item, the HP, and whether it's nouto or posted. Commenting ostan is treated as binding, and the first ostan gets the item; later commenters form a jono in case that deal falls through. AV is a provisional reservation — it holds the thing for you, usually for a set time, and you're expected to confirm or release it. Don't scatter AVs around; sellers complain about exactly that. Say laitan YV and you're moving to messages.
Chat Acronyms, With a Caveat
| Short | Full form | What it means |
|---|---|---|
EMT | en mä tiedä | I don't know |
EVM | ei voi muistaa | can't remember |
lol, btw, fyi, omg | — | used untranslated |
These age badly: Finnish teenage shorthand turns over fast, and acronyms documented a decade ago can read as dated now — the same way "brb" does in English. The English ones get used as they are, with Finnish endings bolted on when needed. What doesn't go out of date is everything above this section: jne., klo, mm. and t. have looked the same for generations.
Why Finnish Abbreviates So Hard
Look at what's being shortened. Ammattikorkeakoulu is eighteen letters. Henkilötunnus is thirteen. Arvonlisävero is thirteen. Finnish builds words by welding smaller ones together, so its everyday official vocabulary is long by construction — and the abbreviation isn't laziness, it's the pressure valve. The habit that makes the words long is explained in compound words.
That also explains the two styles you'll see. Phrase abbreviations keep the first letters and a full stop: esim., jne., vrt. — and because they stand for a whole inflected phrase, they can't take an ending at all. Word abbreviations take the first syllables and glue them: hetu, some, kirppis, Kela. Those behave like ordinary Finnish nouns — Kelasta, somessa, kirppikselle — and initial-letter acronyms inflect too, with a colon in front of the ending: EU:ssa, alv:n.
One last place they cluster: flat advertisements. 2h+k is two rooms plus a kitchen — and the count includes the living room, so that's a one-bedroom flat, not a two. krs is the floor, the square metres follow, and watch out for kk here: in an apartment ad it's keittokomero, a kitchenette, not kuukausi. If you're reading rental listings, that line plus the vocabulary in house and furniture gets you most of the way through the ad.