3. Unadorned; unembellished; severely simple.

Syn. -- Harsh; sour; rough; rigid; stern; severe; rigorous; strict.

Aus*tere"ly, adv. Severely; rigidly; sternly.

A doctrine austerely logical.

Macaulay.

Aus*tere"ness, n. 1. Harshness or astringent sourness to the taste; acerbity. Johnson.