Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
in-vīsĭbĭlis, e, adj., invisible, unseen (post-Aug.): foramina, Cels. praef.: terra, Tert. adv. Herm. 29 init.: deus, Lact. 7, 9; Paul. Nol. Carm. 35, 208; Tert. Carn. Chr. 12: ea in nobis sunt meliora, quae sunt invisibilia, Aug. Ep. 159, 3: opera ad illos dies invisibiles pertinentia, quibus creavit omnia, i. e. when there was no human eye to see, Aug. de Gen. 6, 6 init. al.
Adv.: in-vīsĭbĭlĭter, invisibly, Tert. adv. Val. 14; Aug. de Gen. 6, 6, 10.