160  aiphnidios  aheef-nid'-
ee-os

 from a compound of 1 (as a 
negative particle) and 5316 
(compare 1810) (meaning non-
apparent); unexpected, i.e. 
(adverbially) suddenly:--
sudden, unawares.

 see GREEK for 1

 see GREEK for 5316

 see GREEK for 1810