A sudden, uncontrollable outburst of anger or a phase of losing control. Often used in the expression 'einen Koller bekommen/kriegen' (to have a fit of rage).
example
Als der Drucker schon wieder das Papier staute, kriegte mein Chef einen Koller.
When the printer jammed the paper yet again, my boss had a fit of rage.
Usage tips
Fixed expressions
The word 'Koller' is almost always used in fixed combinations with verbs. The most common are 'einen Koller bekommen' (to have a fit of rage), 'einen Koller kriegen' (to have a fit of rage), or 'einen Koller haben' (to be having a fit of rage).
EXAMPLE
Als er seinen Schlüssel nicht fand, bekam er einen Koller.
When he couldn't find his key, he had a fit of rage.
Register: colloquial
The expression 'einen Koller kriegen' belongs to colloquial language. It describes a very sudden and loud outburst of anger in an informal way.
EXAMPLE
Ich kriege gleich einen Koller, wenn der Computer noch einmal abstürzt!
I'm going to have a fit of rage if the computer crashes one more time!
Outdated meaning
The original meaning of a horse disease is outdated today. It now appears almost only in historical texts or in literature when horses are involved.
EXAMPLE
Im Roman aus dem 19. Jahrhundert hatte das Pferd den Koller.
In the 19th-century novel, the horse had the staggers.
Compare with
near_synonym · confusable
Koller vs Anfall
seizure / fit / attack
'Anfall' and 'Koller' can both describe a sudden loss of control. 'Anfall' is broader and can refer to various strong emotions, such as anger, laughter, or crying. 'Koller' mainly means an uncontrollable fit of rage or a short phase in which someone completely loses control. The word sounds more colloquial and is often used in 'einen Koller bekommen' (to have a fit of rage). The words are easy to confuse because a Koller can be a kind of Anfall. If you are talking generally about strong emotions, 'Anfall' fits better; if it is clearly about anger or freaking out, 'Koller' sounds more natural.
Koller
Nach der dritten lauten Beschwerde bekam meine Kollegin fast einen Koller.
After the third loud complaint, my colleague almost had a fit of rage.
Anfall
Sie bekam einen Anfall von Lachen, als der Hund mit der Socke weglief.
She had a fit of laughter when the dog ran off with the sock.