Stile concitato (rather Genere concitato) or "agitated style" is a Baroque style developed by Claudio Monteverdi with effects such as having rapid repeated notes and extended trills as symbols of bellicose agitation or anger.
Kate Van Orden points out a precedent in Clément Janequin's "La Guerre" (1528).
Agathe Sueur points out similarities and ambiguities between Monteverdi's genere concitato and stile concitato in rhetoric and poetry.
Some examples of stile concitato can be found in the following works:
References
Stile concitato Wikipedia(Text) CC BY-SA