Dictionary Definition:
upa-√jap P. -japati, to whisper (karṇe, or karṇam, into anybody's ear) MBh. R
• to bring over to one's own party (by secretly suggesting anything into the ear)
• to instigate to rebellion or treachery MBh. xii, 2633 Mn. vii, 197 Daś. Kathās. &c