Definitions

1. verb

to talk or make a continuous, incoherent sound, often with a high-pitched voice, especially in a silly or annoying way

“She began to plutter on about the latest celebrity gossip.”

2. verb

to move or act in a confused or aimless way

“After the party, John pluttered around the house for a few hours before going to bed.”

3. noun

a confused or aimless movement or action

“The crowd’s pluttering around the concert venue was causing a safety concern.”