GRIMLY

grimly

(adverb) in a grim implacable manner; “he was grimly satisfied”

Source: WordNet® 3.1

Etymology 1

Adjective

grimly (comparative grimlier, superlative grimliest)

(now, rare) Grim-looking, grim-natured.

Etymology 2

Adverb

grimly (comparative more grimly, superlative most grimly)

In a grim manner.

Synonym: grisly (obsolete)

Source: Wiktionary

Grim"ly, a.

Definition: Grim; hideous; stern. [R.] In glided Margaret's grimly ghost, And stood at William's feet. D. Mallet.

Grim"ly, adv.

Definition: In a grim manner; fiercely. Shak.

GRIM

Grim, a. [Compar. Grimmer (-mer); superl. Grimmest (.] Etym: [AS. grim; akin to G. grimm, equiv. to G. & D. grimmig, Dan. grim, grum, Sw. grym, Icel. grimmr, G. gram grief, as adj., hostile; cf. Gr.

Definition: Of forbidding or fear-inspiring aspect; fierce; stern; surly; cruel; frightful; horrible. Whose grim aspect sets every joint a-shaking. Shak . The ridges of grim war. Milton.

Syn.-- Fierce; ferocious; furious; horrid; horrible; frightful; ghastly; grisly; hideous; stern; sullen; sour.

Source: Webster’s Unabridged Dictionary 1913 Edition