Other Idioms and Phrases with stickit
Continue what one is doing, endure something to the end, as in I hate large parties but I promised her I'd stick it to the end. [Early 1900s] Also see stick out, def. 2.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.