ifs and/or buts

no ifs, ands, or buts (about it)

1. Without a doubt or reservation. We're definitely going to lose our jobs after this merger, no ifs, ands, or buts about it.
2. Absolutely no excuses, discussion, or protestations (about something). I don't care how, but you make sure you're at your son's party tomorrow—no ifs, ands, or buts about it! No ifs, ands, or buts—just do as I tell you!
See also: but, no

ˌifs and/or ˈbuts

(often used in negative sentences) used to stop somebody arguing, protesting or making excuses when you tell them to do something: I want this work finished by Friday and no ifs and buts.
See also: and, but, if