I can't stand her when she 'acts/gets (all) high and mighty' like that.
He's not so 'high and mighty' now that he needs our help.
It took a 'mighty' effort to get everything done on time.
(..) For God's sake, he's got to be killed right away. Look where he is. I can't shoot that well, and you know it. - I haven't shot a gun in years. - I'd feel mighty comfortable... ifyou did now. Don't go near that dog. He'sjust as dangerous dead as alive. Yes, sir. Yes, son. (..)1962 To Kill a Mockingbird
(..) Hey, everybody. Look at Scout! Come on in here. Have your breakfast. I thinkyour dress is mighty becomin', honey. Now don't go tuggin' at that dress. You wanna have it all wrinkled before you even get to school? I still don't see why l have to wear a darn old dress. (..)1962 To Kill a Mockingbird