vipassaka : [adj.] gifted with introspection.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Vipassaka (adj.) [fr. vipassati] qualified to win insight, contemplating, gifted with introspection S ii.232; Ps i.167; Miln 342, 369; 393, VbhA 297.

Pali-English Dictionary, TW Rhys Davids, William Stede,