IPA: /ɔːˈstɜːrli/
KK: /ɔːˈstɜrli/
In a way that is strict or severe, without any decoration or luxury.
The room was furnished austerely, with only a simple table and chair.
Austerely → It is formed from "austerus" (from Latin, meaning harsh or severe) and the adverbial suffix "-ly" (meaning in a manner of). The word "austerely" means in a harsh or severe manner.
Think of the Latin word for harshness ('austerus') to remember that 'austerely' describes doing something in a severe or strict way.