Schmerz

German

Schmerz m (mixed, genitive Schmerzes, plural Schmerzen)

(chiefly in the plural) physical pain, ache (practically, as a sensation)
Haben Sie Schmerzen? ― Do you feel pain?

Das waren die schlimmsten Schmerzen, die ich je erlebt habe. ― That was the worst pain I have ever felt.
(chiefly in the singular) physical pain (theoretically, as a bodily mechanism or function)
Schmerz ist ein Alarmsignal des Körpers. ― Pain is an emergency signal of the body.

Konditionierung durch Schmerz ― conditioning by pain
(chiefly in the singular) emotional pain, sorrow, heartache
Man lebt weiter, aber der Schmerz bleibt. ― One lives on, but the pain remains.

(physical pain as a sensation): While the plural is the normal choice, the singular is not altogether impossible in this sense. In specific contexts, it may even be fairly common, e.g. referring to chronic pain or, conversely, a sudden shot of pain, etc.

Declension of Schmerz [masculine, mixed]

¹Now rare, see notes.