Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
vĕnĕrābundus, a, um, adj. [veneror], venerating, revering, reverential: venerabundi templum iniere, Liv. 5, 22; 5, 41; 1, 16; Suet. Calig. 5.