This is the 2764th most frequent German word.
lauter
"Lauter" in English means "nothing but," "pure," or "only."
In this sentence, 'lauter' emphasizes that the room is furnished entirely with pretty furniture, implying all pieces contribute to this description.
Das Zimmer ist mit lauter hübschen Möbeln ausgestattet.
The room is furnished with all kinds of pretty furniture.
In this sentence, 'lauter' refers to increasing the volume of speaking.
Kannst du lauter sprechen?
Can you speak louder?
Here, 'lauter' indicates that the street passes by exclusively old houses, emphasizing the uniformity or exclusiveness.