Permission to proceed: waiting for the go-ahead from the control tower. (noun)
Characterized by energy and assertiveness: a go-ahead marketing strategy. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "go-ahead" in a sentence
"Carter gave me the go-ahead, and this time I had the support of both Vance and Brzezinski."
"Though Brin and Page had yet to give an explicit go-ahead, it was clear that they were quietly rooting the effort on."
"LA has not had a American football team for 16 years, and with such financial determination, if the stadium is given the go-ahead, it seems almost certain the city will be returning to the NFL in the near future."