Patience is one woman - strangely true (6)
I believe the answer is:
virtue
'patience is one' is the definition.
(I know that patience is a virtue)
'woman strangely true' is the wordplay.
'woman' becomes 'Vi' (short for Violet).
'strangely' is an anagram indicator.
'true' anagrammed gives 'rtue'.
'vi'+'rtue'='VIRTUE'
(Other definitions for virtue that I've seen before include "Maybe hope" , "Morally good quality" , "Admirable quality" , "Patience, for example?" , "Highly moral behaviour" .)