In the first movement of "Verklarte Nacht" by Arnold Schoenberg there is a term "Etwas belebter". When I checked this word in dictionary it mean "Somewhat busier". When I listen to the piece in this part the piece is becoming faster. does busier here means faster?
"Etwas belebter" here is used with the meaning "Somewhat more lively". Speed is an obvious component of that but you might also make the articulation a bit more sprightly, articulating somewhat snappier and giving some more danceable weight to the natural rhythmic accents.