Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
per-spĕcŭlor, ātus, 1, v. dep., to examine or explore thoroughly, to reconnoitre well: perspeculatus locorum situs, Suet. Caes. 58: cum de vallo perspecularetur, Auct. B. Afr. 31.