Obreptitious a. : Done or obtained by surprise; with secrecy, or by concealment of the truth.

Example:


Taxonomy
truth, Dictionary, tious, Obreption, surprise, secrecy, concealment, trickery, Unanswered questions, Obscure Words, Webster 1913, Literature & Language, Cotgrave, Search, Tutor, Adjective, Patrick J. Cassidy, eSpindle.

Defination from the web:
... Word Tutor: obreptitious. Top. Home > Library > Literature & Language > Spelling & Usage. IN BRIEF: Adjective- Done or obtained by trickery or by ...