Omen (4)
'omen' is the definition.
(I know that omen can be written as portent)
This is the entire clue.
(Other definitions for portent that I've seen before include "Sign or warning of an event likely to happen" , "Prophetic sign" , "Foreboding" , "Evil omen" , "bad sign" .)
'omen' is the definition.
(auspice is a kind of omen)
This is all the clue.
(Other definitions for auspice that I've seen before include "future promise" , "Portent" , "Omen (archaic)" , "sponsorship" , "Sign" .)
'omen' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sign that I've seen before include "Show" , "Manifestation" , "Any of the 12 divisions of the Zodiac" , "Traffic control - to write one's name" , "Notice; symbol" .)
'omen' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for augury that I've seen before include "Omen or its interpretation" , "Portent or harbinger" , "Portent or prophecy" , "Divination, prediction" , "Prophesy" .)