Roughly, fiercely, violently, cruelly, severely, sternly, keenly, eagerly.

With indifference to or delight in another's suffering.

Angrily, sharply; cruelly, maliciously; violently.

cruelly.

cruelly.

Angrily, maliciously, cruelly; with malicious cruelty or ill-will; spitefully.

In a despiteous manner, with despite: (a) contemptuously; insultingly; (b) with bitter ill-will or enmity; spitefully, cruelly, pitilessly…

Chiefly British. Modifying an adjective or adverb. Originally with the sense ‘as —— as a beast; —— like a beast’; brutishly, abhorrently (now rare)…

In a violent and bloody manner; brutally, barbarously.

In a savage manner; cruelly, barbarously, fiercely.

In a bitter manner; with bitterness. (See the senses of bitter, adj.)

Despitefully.

In a savage manner; barbarously.