Decreasing, falling, or going down. Often used for numbers, trends, or economic developments.
example
Die Arbeitslosenzahlen sind im letzten Quartal erfreulicherweise leicht rückläufig.
Fortunately, unemployment figures were slightly declining in the last quarter.
Usage tips
Word composition
The word is made up of 'rück' (back) and 'läufig' (from laufen/going). So it literally describes something that 'runs backward' or 'goes back.'
EXAMPLE
Die rückläufige Bewegung des Roboters war genau programmiert.
The robot's reverse movement was precisely programmed.
Economics and statistics
In its most common meaning, 'rückläufig' is combined with numbers, data, and trends. Typical nouns are 'Zahlen' (figures/numbers), 'Umsatz' (revenue), 'Gewinn' (profit), 'Nachfrage' (demand), or 'Entwicklung' (development/trend).
EXAMPLE
Die Nachfrage nach diesem Produkt ist seit Monaten rückläufig.
Demand for this product has been declining for months.
Use with 'sein'
'Rückläufig' is very often used predicatively with the verb 'sein' (to be) to describe the state of a development. The structure is then: [noun] + ist/sind + rückläufig.
EXAMPLE
Die Verkaufszahlen für das erste Quartal sind stark rückläufig.
Sales figures for the first quarter are declining sharply.
Astronomy terminology
In the context of planets and stars, 'rückläufig' is a technical term from astronomy. It describes an apparent direction of movement in the sky.
EXAMPLE
Von der Erde aus betrachtet ist der Mars gerade rückläufig.
Viewed from Earth, Mars is currently retrograde.
Compare with
antonym
rückläufig vs zunehmend
increasingly / waxing
'zunehmend' and 'rückläufig' describe opposite developments. 'zunehmend' means that something is becoming more, stronger, or more frequent. 'rückläufig' means that something is decreasing or going down. 'rückläufig' is used especially often for numbers, trends, sales, or economic developments. So the difference is the direction: with 'zunehmend', the development goes upward; with 'rückläufig', it goes downward.
rückläufig
Die Zahl der Krankmeldungen ist seit Montag rückläufig.
The number of sick notes has been declining since Monday.
zunehmend
In der Stadt nutzen zunehmend viele Menschen das Fahrrad.
In the city, more and more people are using bicycles.