
Unbecoming
Subject Sensitivity
Consider who is being described. 'Unbecoming' can imply a failure to meet expectations based on role or status. 
Cultural Nuance
'Unbecoming' might be culturally specific, relating to the social norms of a particular group or society. 
Nuanced Criticism
Using 'unbecoming' can be a polite way to criticize someone's actions or appearance without being too harsh. 