May your Birthday be: Abounding Abundant Accommodating Accordant Active Adventuresome Adventurous Affable Affluent Agreeable All heart All right Alright Amazing Ambrosial Ambrosian Amenable Amiable Amicable Ample Amusing A-one Aplenty Appealing Aperitive Appetizing Appreciated Artful As it ought to be As it should be Associative Astonishing Astounding At leisure Attractive Atypical Auspicious Avid Awesome and... Most of all, Happy.