kräftigen
Kräftigen is a German verb meaning to make something stronger, more robust, or to reinforce and fortify. It is used in both physical and figurative contexts. Physically, one can kräftigen the body or muscles through exercise; figuratively, one can kräftigen a claim, an argument, or a position by providing additional support or evidence. The term is common in standard prose and can appear in technical, academic, and formal writing. In some contexts it is somewhat more literary or specialized than the everyday synonym stärken.
Grammar and forms: Kräftigen is a regular verb. In the present tense: ich kräftige, du kräftigst, er
Etymology and usage notes: The verb derives from kräftig, meaning strong, itself related to the Germanic word
Examples: Die Trainingseinheiten kräftigen die Muskulatur. Die neuen Belege kräftigen die These des Forschers. Die Maßnahme