| 例句 |
featherbrainedadjective lacking in seriousness or maturitysome featherbrained youngsters giggled through the graduation ceremonies birdbrained, ditzy(or ditsy), dizzy, flighty, frivolous, frothy, futile, giddy, goofy, harebrained, light-headed, light-minded, puerile, scatterbrained, silly, yeasty fatuous, foolish, inane, nonsensical, thoughtless, witlesscrazy, daffy, daft, fruityexuberant, flippant, fluttery, giggly, happy, light, lighthearted, playfulsappy, shallow, superficial earnest, serious, serious-minded, sober, unfrivolous grave, melancholy, somber(or sombre), thoughtfuldignified, heavy, no-nonsense, sedate, severe, solemn, staid |