διασφαλίζομαι
From LSJ
ἀναπηδῆσαι πρὸς τὸν πάππον → jumped up on his grandfather's knees, sprang up into his grandfather's lap
English (LSJ)
A secure firmly, Plb.5.69.2, Ph.Byz.Mir.4.2, Herod. Med. ap. Orib.8.7.3:—Pass., σιδήρῳ διησφαλισμένα J.AJ15.11.3.