### Clue: No female to worry over contrary men, period! (5)
### Answer: RETRO 
 ### Explanation: Definition: period
 "f"(abbrev. for "female") **deleted from**(No … to) "fret"(to worry and be anxious about) **placed above**(over, in a down clue) **reversal of**(contrary) OR(abbrev. for "other ranks", men in the military who are not commissioned).
Defn: …, as an adjective, signifying, say, styles and designs, characteristic of a past historical time, as in "period clothing".