Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

insĭdĭōsē, adv., v. insidiosus fin.

insĭdĭōsus, a, um, adj. [insidiae], cunning, artful, deceitful, dangerous, insidious (class.).

  1. I. Of persons: quis insidiosior unquam fuit? Cic. Verr. 2, 2, 78, § 192.
  2. II. Of inanim. and abstr. things: Capraria insidiosa naufragiis, Plin. 3, 5, 11, § 78: pocula Circes, Ov. M. 14, 294: verba, id. H. 20, 212: clementia, Cic. Att. 8, 16, 2.
    Sup., Plin. 29, 1, 8, § 28.
    Adv.: insĭdĭōsē, cunningly, deceitfully, insidiously: in gratiam rediit cum illo, Cic. Rab. Post. 12, 33: me insidiosissime tractavit, id. Q. Fr. 1, 3, 8.