Learn English – Single word to describe someone who changes topics a lot

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Is there an adjective that describes a person who changes the subjects a lot? As in, conversation subjects.

EDIT: I found the word "discursive" which means to digress from topic to topic. Considering people tend to digress subconsciously this isn't 100% what I was looking for but it will do. Thanks to those who tried helping.

Best Answer

A somewhat broader term that might suit, depending on the circumstances, is flibbertigibbet

A frivolous, flighty, or excessively talkative person.

Oxford Dictionaries Online

Also, the term scattershot could be applied to the discourse (but not the person)

Covering a wide range in a random way; indiscriminate: "his habit of scattershot comment on whatever issue catches his eye" (Howell Raines).

American Heritage Dictionary