frivolous,"['airheaded ', 'dizzy ', 'emptyheaded ', 'featherbrained ', 'giddy ', 'lightheaded ', 'lightheaded ', 'silly ', 'flighty ', 'flyaway ', 'headintheclouds ', 'scatterbrained ', 'flippant ', 'lightminded ', 'idle ', 'light ', 'light ', 'trivial ', 'superficial ', 'serious ']"