Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
trī̆plĭco, āvi, ātum, 1, v. a. [triplex], to multiply by three, to treble, triple (post-Aug. and very rare): numerum, Gell. 1, 20, 5; Macr. Somn. Scip. 1, 20 med.: id triplicatum corvis (tribuit), Plin. 7, 48, 49, § 153; Vulg. Ezech. 21, 14.