obreption
Ob*rep"tion, n. Etym: [L. obreptio, fr. obrepere, obreptum, to creep up to; ob (see Ob-) + repere to creep.] 1. The act of creeping upon with secrecy or by surprise. [Obs.] Cudworth. 2. (Scots Law) Defn: The obtaining gifts of escheat by fraud or surprise. Bell.