Menacing old male, one with common sense (7)
I believe the answer is:
ominous
'menacing' is the definition.
(I know that menacing can be written as ominous)
'old male one with common sense' is the wordplay.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'male' becomes 'm' (common abbreviation).
'one' becomes 'I' (Roman numeral).
'with' means one lot of letters go next to another.
'common sense' becomes 'nous' (nous is a kind of common sense).
'o'+'m'+'i'+'nous'='OMINOUS'
(Other definitions for ominous that I've seen before include "Threatening disaster" , "'Threatening, foreshadowing tragedy (7)'" , "Inauspicious" , "Portending something bad" , "Threatening, doesn't look good" .)