To make a confused noise; to bustle.
To utter words hurriedly, especially (but not exclusively) as a speech disorder (compare cluttering).
To fill something with clutter.
Background echoes, from clouds etc., on a radar or sonar screen.
A confused disordered jumble of things.
To put into disorder; to tumble; to touse; to muss.
The action of ruffling or setting in disorder.