1. (superl.) Favored by hap, luck, or fortune; lucky; fortunate; successful; prosperous; satisfying desire; as, a happy expedient; a happy effort; a happy venture; a happy omen.

2. (superl.) Experiencing the effect of favorable fortune; having the feeling arising from the consciousness of well-being or of enjoyment; enjoying good of any kind, as peace, tranquility, comfort; contented; joyous; as, happy hours, happy thoughts.

3. (superl.) Dexterous; ready; apt; felicitous.

a propos accepting accidental ad rem adapted addled advantageous advisable applicable apposite appropriate apropos apt at ease auspicious beaming beatific beatified becoming beery befitting bemused beneficial benign benignant besotted blessed blind drunk blissful blithe blithesome bright bright and sunny capering casual cheerful cheery chirping civil cock-a-hoop cogent comely comfortable composed congruous content contented convenient convincing correct crapulent crapulous dancing decent decorous delighted desirable dizzy dovetailing drenched drunk drunken easy easygoing ecstatic effective effectual efficacious efficient elated eupeptic euphoric exalted exhilarated expedient exuberant exultant fair far-gone favorable favoring feasible felicitous fit fitted fitten fitting flushed flushed with joy flustered fortuitous fortunate fou fructuous full full of promise gay geared genial genteel giddy glad gladsome gleeful glorious glowing golden good gratified high hopeful in good spirits in high spirits in liquor in seventh heaven incidental inebriate inebriated inebrious inspired intoxicated irrepressible jolly joyful joyous jubilant just just right laughing leaping light-hearted lighthearted likely lucky maudlin meet mellow merry meshing muddled nappy nice of good cheer of good comfort of good omen of happy portent of promise on cloud nine on the button opportune optimistic overjoyed pat pleasant pleased pleased as Punch politic profitable promising proper propitious prosperous providential purring qualified radiant recommendable reconciled reeling relevant resigned riant right ripe rosy sanguine sanguineous sans souci satisfied seasonable seemly shikker singing smiling smirking sodden sortable sotted sparkling starry-eyed suitable suited suiting sunny tailored telling thrice happy thrilled tickled pink tiddly timely tipsy to be desired to the point to the purpose uncomplaining under the influence unrepining urbane useful well well-chosen well-expressed well-put well-timed winsome wise without care worthwhile