翻訳　日本語　英語: 洋々たる

1 bright, brightly-colored, brightly-coloured, brilliant, bubbling, cheerful, effervescent, frothy, happy, hopeful, light, light-colored, pollyannaish, promising, pyrotechnic, scintillating, sparkly, square, straight, straightforward, upbeat, vivid.

2 bright, brilliant, burnished, hopeful, lustrous, promising, shining, shiny, smart, undimmed, vivid.

3 bright, confident, dependable, encouraging, footsure, honest, hopeful, promising, reliable, rock-steady, steady-going, supporting, sure-footed, surefooted, true, trustworthy.

4 bright, desirous, hopeful, promising, wishful.