[说明]joyous 指快乐的性质或气质, 如： a joyous family 快乐的家庭
joyful 指因某事而快乐或欢乐, 如： the joyful throngs 欢乐的群众

[ noun ]
the emotion of great happiness
<noun.feeling>

Joyous \Joy"ous\, a. [OE. joyous, joious, joios, F. joyeux.See
{Joy}.]
Glad; gay; merry; joyful; also, affording or inspiring joy;
with of before the word or words expressing the cause of joy.

Is this your joyous city? --Is. xxiii.
7.

They all as glad as birds of joyous prime. --Spenser.

And joyous of our conquest early won. --Dryden.

Syn: Merry; lively; blithe; gleeful; gay; glad; mirthful;
sportive; festive; joyful; happy; blissful; charming;
delightful. -- {Joy"ous*ly}, adv. -- {Joy"ous*ness}, n.