go ahead — Phrasal Verb with go /gəʊ/ verb [I] (present participle going, past tense went, past participle gone)
START › to start to do something: We have permission to go ahead with the project.
PERMISSION › something that you say to someone to give them permission to do something: ''Can I borrow your book?'' ''Yes, go ahead.'' go-ahead noun › get/give the go-ahead