adj. glad, pleased; cheerful, characterized by joyfulness; well-timed, appropriate; fortunate; typified by a dazed or obsessive manner (used in combination: i.e. trigger-happy)
adv. happy, glad, pleased
1. Experiencing the effect of favourable fortune; having the feeling arising from the consciousness of well-being or of enjoyment; enjoying good of any kind, as peace, tranquillity, comfort; contented; joyous.
Music makes me feel happy.
2. Favored by luck or fortune; lucky.
3. Dexterous; ready; apt; felicitous.
4. Content, satisfied (with or to do something); having no objection (to something).
Are you happy to pay me back by the end of the week?
Are you happy with your internet service provider?
5. (As a suffix to a noun) favouring or inclined to use, as in trigger-happy.