Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
expĕtĭbĭlis, e, adj. [expeto], desirable: expetendum est, inquiunt, quod bonum est: expetibile, quod nobis contingit, cum bonum consecuti sumus, Sen. Ep. 117, 4: potentia, Boëth. Consol. 2, 6.