get–go 
/ˈgɪtˌgoʊ, ˈgɛtˌgoʊ/ noun
/ˈgɪtˌgoʊ, ˈgɛtˌgoʊ/ noun Meaning:
from the get-go
US, informal : from the very beginning
▪ She didn't like me from the get-go. ▪ They were involved in the project from the get-go.
▪ She didn't like me from the get-go. ▪ They were involved in the project from the get-go.
