This is the 14496th most frequent German word.
kräftigem
"Kräftigem" means "strong" or "hearty" (adjective in dative case).
In this sentence, 'kräftigem' modifies the noun 'Regenschauer' (rain shower), to express the forcefulness or intensity of the rain.
Nach einem kräftigem Regenschauer klarte der Himmel auf.
After a strong rain shower, the sky cleared up.
The term 'kräftigem' describes 'Mehl' (flour), suggesting its sturdiness or nutrient richness.
Das Brot wurde mit kräftigem Mehl gebacken.
The bread was baked with robust flour.
Here, 'kräftigem' is used as an adjective to describe the noun 'Geschmack' (taste, flavor) to indicate its intensity.