From alienating + -ly.
alienatingly (not comparable)
- In a manner that tends to alienate
2015 September 13, Kathryn Flett, “Uncomfortably numb: 'I've had my first Botox injection and I want more'”, in The Observer[1]:Naomi Wolf ’s The Beauty Myth was the first feminist treatise on women’s looks I didn’t find alienatingly hirsute.