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.
(..) Because he's your beau, she's after him like a hornet. Charles Hamilton, I want to eat barbecue with you. Mind you, don't go philandering with any other girl, 'cause I'm mighty jealous. I won't, Miss O'Hara! I couldn't! I do declare, Frank Kennedy, if you don't look dashing... (..)1939 Gone with the Wind
(..) Good morning, Scarlett. Why, lndia Wilkes, what a lovely dress! -Perfectly lovely, darling. -I just can't take my eyes off it. Scarlett, honey.... You're looking mighty fine this morning. -Good morning, Miss Scarlett. -Good morning. -It's a pleasure to see you. -Good morning. Howdy, Miss Scarlett. (..)1939 Gone with the Wind