Full Idea
The best translation of 'phronesis' is probably not 'prudence' (which implies a non-moral motive), or 'practical wisdom' (which makes it sound contemplative), but 'practical intelligence', or just 'intelligence'.
Gist of Idea
'Phronesis' should translate as 'practical intelligence', not as prudence
Source
Julia Annas (The Morality of Happiness [1993], 2.3)
Book Reference
Annas,Julia: 'The Morality of Happiness' [OUP 1995], p.73