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.
(..) You already did. Éowyn... ...my body is broken. You have to let me go. I go to my fathers... ...in whose mighty company... ...I shall not now feel ashamed. Éowyn. Release us. Bad idea. Very handy in a tight spot, these lads, (..)2003 The Lord of the Rings: The Return of the King
(..) I offer you my service, such as it is... ...in payment of this debt. This is my first command to you. How did you escape and my son did not... ...so mighty a man as he was? The mightiest man may be slain by one arrow... ...and Boromir was pierced by many. Get up. My lord, there will be a time (..)2003 The Lord of the Rings: The Return of the King