Meaning: (British informal) very chic; "groovy clothes"
meaning of the word
tittup, swagger, ruffle, prance, strut, sashay, cock
Meaning: to walk with a lofty proud gait, often in an attempt to impress others; "He struts around like a rooster in a hen house"
Mitya walked with a drunken swagger to the locked door, and began knocking to the Poles with his fist.
And he felt as every man feels in the taut moment of such terror that his chief danger was terror itself; his only possible strength would be a coolness amounting to carelessness, a carelessness amounting almost to a suicidal swagger.