Puzzled! if statement with multiple conditions

I want to set multiple conditions for an if statement, but I don’t want the conditions to all have to be true, I want to say if (a or b or c or d, etc. is true) then do this. I don’t want to say if (a && b && c && d, etc. is true). Is it possible to have an if statement with an “or” in the condition? If so, what’s the proper syntax for that?