From the Scandinavian word for fourteen - fjorton (Sweden)/fjorten (Norway, Denmark). Someone, most commonly a girl, acting annoyingly immature. Usually someone in the age 12-17 (approximately), but fjortis is not an age, it's a state of mind.

There are two different fjortis species that can be found in sweden. on one hand there is the trash-fjortis, and on the other hand there is the brat-fjortis.

A fjortis is a swedish, over maked-up (read carroty orange), usually with (dyed)blond hair in her early teens. They dress up as skanks, sometimes they go to partys in nothing but underwear (thong and lace bra). To dress up as a playmate on halloween is a must. when they are old enough to pull off a fake id,or travels to aya napa, they desperatley try to order a "häxa" in the bar to fin out that they dont serve a drink containing more than four different alcohols mixed together in a petflaska.

The trash fjortis usually lives in not so well off suburbs or smaller cities like Karlskrona, Skärhamn or Gothenburg. A normal friday or saturday night they can be found out drinking in parks or busstations or if in Stockholm, in the subways with the ambition to hook up with as many ppl as possible, gender doesnt matter (applies to all fjortis speices). they usually wear baggy yoga pants with their thongs well visible drawn up to their waists combined with cheap tops from H&M or Gina tricot and mad-padded pushup bras. but no boobs. they normaly choose barn och fritid (babysitting and asswiping courses)as their major in gymnasiet (highschool-college-ich).

The brat-fjortis lives in welthier suburbs to Stockholm, or on Östermalm. They are alot like the trash-fjortis, but with an ounce more cash-flow. They spend most of...

Derived from the word for fourteen (fjorton) in scandinavian languages. The plural is fjortisar.

Locally in scandinavia fjortis is used as a (somewhat derogatory) term for a person (commonly a girl) around that age.

Internationally, used for pictures of such a girl in sexually provocative poses.

A young, danish girl, preferably under the age of consent, however photographed in a compromising and risqé position.