
sprühen
to spray
To atomize and distribute a liquid in the form of fine droplets.
Sie sprühte sich Parfüm auf das Handgelenk.
She sprayed perfume on her wrist.
to spray
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to spray
To atomize and distribute a liquid in the form of fine droplets.
Sie sprühte sich Parfüm auf das Handgelenk.
She sprayed perfume on her wrist.

to spray
To emit or produce sparks.
Das Lagerfeuer knisterte und sprühte Funken in den Nachthimmel.
The campfire crackled and sprayed sparks into the night sky.

to radiate
To radiate a quality or feeling very strongly and visibly.
Nach ihrem Erfolg sprühte sie nur so vor Energie und Tatendrang.
After her success, she was simply radiating energy and drive.
The meaning of 'sprühen' (to spray) becomes clear through the object or complement. If you spray a liquid (water, paint), the literal meaning is intended. If 'Funken' (sparks) are sprayed, it is about fire or electricity. If the verb appears with 'vor' and a feeling, it is a figurative description.
Der Gärtner sprüht Wasser auf die Pflanzen.
The gardener sprays water on the plants.
When you spray a liquid onto a surface, use the preposition 'auf' followed by the accusative. The pattern is: etwas auf etwas sprühen (to spray something onto something).
Er sprühte den Lack gleichmäßig auf das Holz.
He sprayed the varnish evenly onto the wood.
In the meaning 'to emit sparks', the most common combination is 'Funken sprühen' (to spray sparks). This can refer to a fire, a grinding machine, or even a short circuit.
Als das Metall auf den Stein traf, sprühten Funken.
When the metal hit the stone, sparks sprayed.
The figurative meaning is almost always formed with the preposition 'vor' and a noun in the dative that expresses a feeling or quality. The pattern is: vor + [feeling in the dative] + sprühen.
Die Kinder sprühten vor Freude, als sie die Geschenke sahen.
The children radiated joy when they saw the presents.
to inject / spray
Spritzen and sprühen can both describe distributing a liquid. Sprühen typically suggests fine droplets or a mist, while spritzen can also refer to a concentrated stream or larger drops. For a fine water mist, sprühen is more suitable; for a strong stream, spritzen is more suitable.

Die Düse sprüht einen feinen Wassernebel über die Pflanzen.
The nozzle sprays a fine mist of water over the plants.
Die Düse spritzt einen kräftigen Wasserstrahl auf die Pflanzen.
The nozzle sprays a strong stream of water onto the plants.