(Old English grimme) or quasi-adv. In a grim manner or mood; fiercely, savagely, horribly. In later use only to look grim, where grim is perhaps…

In a grim fashion; with stern or cruel action, intention, or feelings; fiercely, cruelly; also, in modern use, austerely, rigidly, uncompromisingly.

in the various senses: Splendidly, brilliantly, clearly; loudly; fiercely.

cruelly; fiercely, boldly; (also) swiftly.

Hostilely; perversely; fiercely. Obsolete.

In a ‘felon’ manner, wickedly; fiercely, bitterly, cruelly, severely, also in weaker sense, grievously.

Roughly, harshly; fiercely, bitterly.

In a fell manner; cruelly, fiercely, harshly; eagerly, vigorously. Obsolete.

Cruelly, fiercely, harshly. archaic in later use.

In a fierce manner; furiously, impetuously, violently; †sternly, haughtily.

In a sturdy manner; †with reckless daring (obsolete); ruthlessly, cruelly, violently (obsolete); †surlily, rudely, harshly, mutinously, rebelliously…

Harmfully, injuriously; fiercely, savagely, severely, cruelly; terribly, disastrously; in later use (chiefly jocular), very badly, abominably…

In a stern manner (see the senses of the adjective); with sternness of temper, aspect, utterance, etc.; severely, harshly, unbendingly; †fiercely…

fiercely, roughly, vigorously.

(a) adj. contrary, perverse; (b) adv. fiercely, violently.

Fiercely, feloniously.

Fiercely, savagely. Obsolete.

(Formerly often confused with boorishly.)

In a tigerish manner.

fiercely.

cruelly, ferociously.

In a truculent manner; savagely.