go-ahead
ˈgo-ahead1 
noun
give (somebody) the go-ahead/get the go-ahead to give or be given permission to start doing something:
The company has been given the go-ahead to build a new supermarket.
go-ahead2
adjective [only before noun] British English
using new methods or ideas and therefore likely to succeed:
a go-ahead company
| I |
noungive (somebody) the go-ahead/get the go-ahead to give or be given permission to start doing something:
| II |
adjective [only before noun] British Englishusing new methods or ideas and therefore likely to succeed: