a person who commits arson.

Origin of arsonist

First recorded in 1860–65; arson + -ist Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for arsonist

incendiary, torch, firebug, pyromaniac

Examples from the Web for arsonist

Contemporary Examples of arsonist

Word Origin and History for arsonist

1864, from arson + -ist.

Online Etymology Dictionary, © 2010 Douglas Harper