
zahllos
countless
So numerous that one cannot count them; innumerable.
Am Nachthimmel funkelten zahllose Sterne.
Countless stars sparkled in the night sky.
countless
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countless
So numerous that one cannot count them; innumerable.
Am Nachthimmel funkelten zahllose Sterne.
Countless stars sparkled in the night sky.
The word is made up of 'Zahl' (number) and the ending '-los' (-less). The ending '-los' means 'without,' so literally 'without number'—so many that one can no longer count them.
Es gibt zahllose Gründe, warum das Projekt scheiterte.
There are countless reasons why the project failed.
'Zahllos' (countless) is often used to describe a very large, overwhelming quantity. Common combinations are 'zahllose Beispiele' (countless examples), 'zahllose Möglichkeiten' (countless possibilities), or 'zahllose Male' (countless times).
Ich habe es dir schon zahllose Male erklärt.
I have explained it to you countless times already.
'Zahllos' (countless) is often used in written language or elevated language to emphasize a large quantity. It often sounds stronger and more poetic than other expressions.
Die Küste war mit zahllosen Muscheln bedeckt.
The coast was covered with countless shells.
countless
Both words describe such a large quantity that it can hardly be counted. In modern everyday language, unzählig is usually the neutral choice, whereas zahllos often sounds more literary or solemn. In factual conversations, unzählig is generally more suitable; in figurative language, zahllos may work better.

Auf dem Platz versammelten sich zahllose Menschen.
Countless people gathered in the square.
Auf dem Platz versammelten sich unzählige Menschen.
Countless people gathered in the square.