Adjectives

(a)happyenjoying or showing or marked by joy or pleasure“a happy smile”, “spent many happy days on the beach”, “a happy marriage”
(s)felicitous, happymarked by good fortune“a felicitous life”, “a happy outcome”
(s)glad, happyeagerly disposed to act or to be of service“glad to help”
(s)happy, well-chosenwell expressed and to the point“a happy turn of phrase”, “a few well-chosen words”