to manifest
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to manifest itself
To become visible, recognizable, or clear. Often used for abstract things such as illnesses, feelings, or problems that show themselves in a concrete form.
Die Krankheit manifestierte sich durch hohes Fieber und Hautausschlag.
The illness manifested itself through a high fever and a rash.
The use of 'manifestieren' (to manifest) changes with the meaning. 'Sich manifestieren' (to manifest itself) is reflexive and means that something becomes visible on its own. 'Etwas manifestieren' (to manifest something) is transitive and means that someone actively creates or shows something.
Ihre Unzufriedenheit manifestierte sich in lautem Protest.
Her dissatisfaction manifested itself in loud protest.
When something becomes visible, the verb is always reflexive ('sich manifestieren' — to manifest itself). It is often followed by a preposition such as 'in' or 'durch' with the dative to describe how or in what something shows itself.
Der Stress manifestierte sich bei ihm durch Schlafprobleme.
The stress manifested itself in him through sleep problems.
The reflexive form 'sich manifestieren' (to manifest itself) belongs to a formal or scientific style. It is often found in medical, psychological, or sociological texts.
Die Symptome des Virus manifestieren sich erst nach einigen Tagen.
The symptoms of the virus only manifest themselves after a few days.
In the meaning of 'etwas Wirklichkeit werden lassen' (to make something become reality), 'manifestieren' (to manifest) is very often used in the context of spirituality, coaching, and positive thinking.
Sie glaubt fest daran, dass sie durch ihre Gedanken Fülle manifestieren kann.
She firmly believes that she can manifest abundance through her thoughts.
In a political context, 'manifestieren' (to express) is often used to show a stance publicly. Typical objects here are 'den Willen' (the will), 'den Protest' (the protest), or 'die Ablehnung' (the rejection).
Die Demonstranten manifestierten ihren Willen zur Veränderung.
The demonstrators expressed their will for change.
to appear / occur
'auftreten' and 'sich manifestieren' can both describe that something becomes visible or noticeable, for example a problem or a symptom. 'auftreten' is more neutral and suitable for everyday use: above all, it says that something occurs or arises. 'sich manifestieren' sounds more elevated and emphasizes that something may not have been clear before and is now clearly recognizable. Learners may confuse the words because both can fit illnesses, feelings, or problems. In normal everyday language, 'auftreten' is often more natural; 'sich manifestieren' fits better in more formal or more precise descriptions.
Die Angst manifestierte sich bei ihr in starkem Zittern.
Her fear manifested itself in severe trembling.
Nach dem Essen treten bei Paul oft Bauchschmerzen auf.
After eating, Paul often gets stomach pains.