Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
austērē, adv., v. austerus fin.
* austērē, acc. to II., rigidly, austerely, severely: agit mecum austere et Stoice Cato, Cic. Mur. 35, 74.
Comp.: cum aliquo austerius agere, * Vulg. 2 Macc. 14, 30.