adjective, happier, happiest.
1.
delighted, pleased, or glad, as over a particular thing:
to be happy to see a person.
2.
characterized by or indicative of pleasure, contentment, or joy:
a happy mood; a happy frame of mind.
3.
favored by fortune; fortunate or lucky:
a happy, fruitful land.
4.
apt or felicitous, as actions, utterances, or ideas.
5.
obsessed by or quick to use the item indicated (usually used in combination):
a trigger-happy gangster. Everybody is gadget-happy these days.