
flott
fast
Moving quickly, brisk, or done in a short time.
Mit dem neuen Fahrrad bin ich ziemlich flott unterwegs.
With the new bike, I get around pretty fast.
fast / stylish
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fast
Moving quickly, brisk, or done in a short time.
Mit dem neuen Fahrrad bin ich ziemlich flott unterwegs.
With the new bike, I get around pretty fast.

stylish / lively
Lively, spirited, or fashionable and chic in appearance or behavior.
Sie trug ein flottes Kleid und sah fantastisch aus.
She wore a stylish dress and looked fantastic.

casual / cheeky
Informal and relaxed in manner, sometimes also with the connotation of being sexually uninhibited.
Er ist für sein flottes Mundwerk bekannt.
He is known for his cheeky way of talking.
The adjective 'flott' is mainly used in colloquial language. It often sounds livelier and more relaxed than other words for 'schnell' (fast) or 'schick' (stylish).
Mit dem E-Bike komme ich morgens ganz flott zur Arbeit.
With the e-bike, I get to work really fast in the morning.
In the meaning 'schnell' (fast), 'flott' often describes movement, pace, or the quick completion of tasks. Typical phrases are 'flott gehen' (to go quickly) or 'flott vorankommen' (to make quick progress).
Die Reparatur ging wirklich flott, nach einer Stunde war alles erledigt.
The repair went really fast; after an hour everything was done.
When 'flott' refers to people or clothing, it means 'modisch' (fashionable), 'schick' (stylish), or 'schwungvoll' (lively). It describes a dynamic and positive visual impression.
Deine neue Frisur sieht richtig flott aus!
Your new hairstyle looks really stylish!
In relation to behavior or language, 'flott' can also mean 'ungezwungen' (informal) or 'locker' (relaxed). Depending on the context, however, it can also have a slightly negative meaning and be understood as 'too direct' or 'cheeky'.
Er ist bekannt für seine flotten Sprüche, die nicht bei jedem gut ankommen.
He is known for his cheeky remarks, which don't go over well with everyone.
fast / quick
Schnell and flott can both express that an action takes little time. Schnell neutrally describes the speed or short duration. Flott additionally suggests a brisk process and is suitable when the work is progressing well.

Das Team baute die Bühne flott und ohne längere Pausen auf.
The team set up the stage briskly, without any long breaks.
Das Team baute die Bühne schnell in einer Stunde auf.
The team set up the stage quickly, in one hour.