Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
albĭdus, a, um, adj. [albus], white (very rare): spuma, * Ov. M. 3, 74: granum, Col. R. R. 2, 9, 13: ulcus, Cels. 5, 26: pus albidius, id. 5, 28, n. 4: pus albidissimum, id. 5, 26, n. 20: color caeruleo albidior, Plin. Ep. 8, 20, 4.
Adv. not used.