The landmark writer's guide The Elements of Style states that you should "not be tempted by a twenty-dollar word when there is a ten-center handy, ready, and able." German, however, has quite a number of words that "are so long that they have a perspective," as Mark Twain once wrote. The longest word actually included in the Duden German dictionary is die Kraft­fahr­zeug-Haft­pflicht­ver­si­che­rung (auto liability insurance), with 35 letters. There are, however, many longer words that are acceptable to use although not listed in Duden, such as die Verkehrsinfrastrukturfinanzierungsgesellschaft (traffic infrastructure financing society) and das Elektrizitätswirtschaftsorganisationsgesetz (electricity economy organization law). Such "20 euro" words are not only found in written German, but also in spoken German, as evidenced by these Yabla German videos!

BANNER PLACEHOLDER

Auf Weltmeisterschaftsebene

At World Cup level,

sind wir so Mittelfeld, unteres Mittelfeld...

we are about midfield, lower midfield...

Caption 70, Frisbee - Karlsruher Weihnachtsturnier

 Play Caption

Außerdem kann man hierzulande

In addition, in this country you can

manche Reisestrecke auch ohne Geschwindigkeitsbegrenzung erfahren.

also experience some travel routes without a speed limit.

Captions 22-23, Reiseland Deutschland - Vielfalt im Herzen Europas

 Play Caption

Wir haben die gesetzliche Verpflichtung,

We have the legal obligation

regelmäßig die Geschwindigkeitsbeschränkungen auf den hessischen Autobahnen zu überprüfen.

to check the speed limits on the Hessian autobahns regularly.

Captions 10-11, Deutsche Autobahnen - Geschwindigkeitsbegrenzungen

 Play Caption

Ein Porsche dreihundertsechsundfünfzig B eintausendsechshundert GS

A Porsche three hundred fifty-six B one thousand six hundred GS

Carrera GTL Coupé, Baujahr neunzehnhundertsechzig mit Note eins hat somit laut Classic Data

Carrera GTL coupé, built in nineteen hundred sixty with a grade of one, according to Classic Data

einen Versicherungswert von sechshundertfünfzigtausend Euro.

has an insurance value of six hundred and fifty thousand euros.

Captions 57-59, Porsche 356 - Der erste Porsche

 Play Caption

So as you can see, in common conversation about sports and cars and numbers (or a combination thereof), it is possible to find some "mouthfuls" indeed. 

BANNER PLACEHOLDER

Further Learning
Read some of these fun articles about long German words at The Week and Time, and if you are feeling brave, read this Duden article about writing words together or separately. 

This week marks the 100th Yabla German lesson, and in celebration we'd like to offer you some examples of the German word das Jubiläum in context. 

BANNER PLACEHOLDER

Zweitausendzehn feierte der Klassiker unter den deutschen Volksfesten

In two thousand ten, the classic among the German folk festivals celebrated

zweihundertjähriges Jubiläum.

its two-hundred-year anniversary.

Captions 26-27, Reiseland Deutschland - Vielfalt im Herzen Europas

 Play Caption

In German, das Jubiläum can mean not only the anniversary, but the party or celebration for the anniversary as well: 
 

Ich bin heute hier in der Rockfabrik in Bruchsal zu dem dreißigjährigen Jubiläum.

Today I am here in the Rock Factory in Bruchsal for [the] thirtieth anniversary [celebration].

Caption 2, Rockfabrik-Open-Air - Demon's-Eye-Interview

 Play Caption

Das Jubiläum can also, like many German words, be used to form a compound word.
 

Zweitausendvierzehn ist ja das große Jubiläumsjahr der Rapper.

Two thousand fourteen is, indeed, the rapper's big anniversary year.

Caption 2, Thomas D - Der Aufstieg und Fall des Tommy Blank

 Play Caption

BANNER PLACEHOLDER

Further Learning
Brush up on your usage of typical celebration words like Prost, feiern, and Sekt on Yabla German and see if you can properly translate these compound words that are formed with das Jubiläum: die Jubiläumsausgabe, die Jubiläumsausstellung, die Jubiläumsfeier, das Jubiläumsheft, das Jubiläumsspiel, and die Jubiläumsveranstaltung.