The phrase "unflinching look" means to gaze or stare at something or someone without hesitation, fear, or the urge to look away, showing determination and bravery. Full definition
The fact that Pinsent and Christie's relationship is so romantic is what gives the film a tragic edge over other stories portraying a dissolving marriage; the only foes here are time and genetics, and Polley's graceful yet unflinching look at how they ravage one couple's love means romantics should avoid this film come Valentine's Day. (waytooindie.com)
Others have not been so fortunate and have had to give defeat a more unflinching look. (religion-online.org)
Athough it can be a raw and unflinching look from the sidelines, Baker imbues the film with such spirit and energy that you're swept along in their journey and while you share their struggle, you're also intoxicated with their positivity and determination and he does so by refraining from judgment or condescension. (markedmovies.org)