Having a feeling arising from a consciousness of well-being or of enjoyment; enjoying good of any kind, such as comfort, peace, or tranquillity; blissful, contented, joyous.
Music makes me feel happy.
Experiencing the effect of favourable fortune; favored by fortune or luck; fortunate, lucky, propitious.
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?
(Of acts, speech, etc.) Appropriate, apt, felicitous.
a happy coincidence
(in combination) Favoring or inclined to use.
slaphappy, trigger-happy
(of people, often followed by "at" or "in") Dexterous, ready, skilful.