This is the 837th most frequent German word.
schnelle
The German word "schnelle" means "quickness" or "speed" (it is the feminine form of the adjective "schnell" when used as a noun in some contexts).
Used as an adjective to describe the characteristic 'quick' of the noun 'Beschleunigung' (acceleration).
Das Auto hat eine schnelle Beschleunigung.
The car has a quick acceleration.
Used as an adjective in plural form to describe 'Antworten' (responses), showing the responsive nature of the student.
Die schnellen Antworten des Schülers beeindruckten den Lehrer.
The student's quick responses impressed the teacher.
Used as an adjective to describe 'Kleider' (clothes), implying practicality and simplicity suitable for quick dressing.