A person who wants to, or is heavily speculating converting to a religion different than their current one. Also used to refer to people who are not practicing in the current religion they categorize themselves under. they are generally indifferent as to what beliefs they may come to follow, and are easily swayed by those that may seek to convert them.
Isnt David Jewish?" "Technically yes, but he hasnt actually been to a synagogue in eight years. Hes also been checking out this nearby mosque. Hes really a transitionist.